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  1. Fulltext Comparison on the antioxidant properties of fresh and convection oven-dried guava (Psidium guajava L.)
    Siow, L.F., Hui, Y.W.
    International Food Research Journal, 2013;20(2):639-644.
    MyJurnal
    Antioxidant properties of both fresh and convection oven-dried guavas (Psidium guajava L.) were determined. Guava slices of 1.0 cm wide, 3.0 cm long and 0.5cm thick (20 g) were subjected to convection drying at 40°C for 9, 12 and 14 hours, respectively, and their water activity, total phenolic content (TPC) and antioxidant activities were measured. Guavas that had been subjected to drying for 9, 12 and 14 hours were shown to achieve the water activity of 0.36-0.49. Ascorbic Acid Equivalent Antioxidant Capacity (AEAC) of guava was found to decrease for all the drying durations. Convection oven-drying of guava for 12 and 14 hours showed a significant decrease in TPC (p < 0.01) and Ferric Reducing Power Assay (FRP) (p < 0.01). Nine hours of convection oven-drying was shown to retain most of the TPC, AEAC and FRP of guava.
    Matched MeSH terms: Ascorbic Acid
  2. Fulltext Breakfast Consumption and Quality of Macro- and Micronutrient Intake in Indonesia: A Study from the Indonesian Food Barometer
    Khusun H, Anggraini R, Februhartanty J, Mognard E, Fauzia K, Maulida NR, et al.
    Nutrients, 2023 Aug 30;15(17).
    PMID: 37686824 DOI: 10.3390/nu15173792
    Breakfast is an important meal that has been shown to have a positive effect on health. The current study aimed to assess the patterns of breakfast consumption among adult Indonesians and to estimate the contribution of breakfast to their nutrient intake and dietary quality. The study used 24-h recall data from the 2018 Indonesian Food Barometer study to assess breakfast intake among 1333 adults aged 18 and above from six provinces in Indonesia. Diet quality was measured using the Nutrient Rich Food index (NRF) 9.3, and the nutritional profile of breakfast was compared across tertiles of NRF 9.3. In total, 5.2% of adults in Indonesia skipped breakfast. Breakfast contributed 26% to daily energy intakes and 22-28% to intakes of all reported nutrients, except for total sugar (12%), vitamin C (8%) and vitamin D (7%). With respect to daily requirements, breakfast contributed approximately 20% to energy, protein, fat and sodium requirements, 26% to saturated fat but <15% to the requirements for most micronutrients and only 5% for fiber. Among breakfast consumers, a higher NRF score was associated with higher daily intakes of protein, dietary fiber and micronutrients and lower intakes of sodium from breakfast. This study suggests that a balanced breakfast in Indonesia should aim to lower fat and saturated fat intake while increasing fiber, potassium, calcium and vitamin C and D intake. These findings could inform the development of nutrient-based guidelines for breakfast consumption in Indonesia.
    Matched MeSH terms: Ascorbic Acid
  3. Physico- and phytochemical properties of Brassica juncea as affected by agroclimatic conditions
    Batool U, Nawaz R, Ahmad S, Irshad MA, Irfan A, Gaafar AZ, et al.
    Sci Rep, 2024 Jan 08;14(1):797.
    PMID: 38191635 DOI: 10.1038/s41598-023-48808-9
    Physicochemical and phytochemical assessment of leaf mustard (Brassica juncea L.) grown in different agroclimatic conditions is essential to highlight their compositional variability and evaluate the most suitable bunch of agroclimatic and agronomic practices. B. juncea is one of the important leafy vegetables that serve as source of vitamin A and C and iron, and plenty of antioxidants. This in situ research was executed to assess the quality variability of B. juncea grown in different agroecosystems. Leaves' samples of B. juncea were procured from 15 farmers' fields exhibiting different agroclimatic conditions i.e., elevation, nutrient management, temperature, irrigation, and tillage practices. Leaves' samples were subjected to physicochemical and phytochemical analysis, i.e., moisture, pH, TSS, ascorbic acid, carotenoids, phenolics, flavonoids, and antioxidant potential. In the leaves' samples of B. juncea, the target properties were found to vary significantly (P ≤ 0.05) in different agroclimatic conditions. The moisture content, ascorbic acid, phenolic content, carotenoids, and antioxidants were found in the range of 62.7-79.3%, 74-91 mg/100 g, 49.2-49.2 mg GAE/100 g, 436.3-480 mg β carotene/100 g, 32.7-46.67%, respectively. This study elaborates the significant variation of physicochemical and phytochemical attributes of B. juncea due to the prevailing agroclimatic conditions. This necessitates the appropriate choice of B. juncea concerning its composition and ecological conditions of its cultivation in the prospective health benefits.
    Matched MeSH terms: Ascorbic Acid
  4. Heterophil to lymphocyte ratio and tonic immobility reactions to preslaughter handling in broiler chickens treated with ascorbic acid
    Zulkifli I, Che Norma MT, Chong CH, Loh TC
    Poult Sci, 2000 Mar;79(3):402-6.
    PMID: 10735209
    Stress and fear responses were evaluated in broiler chicks that were pretreated for 24 h with 0 ppm (control) or 1,200 ppm of L-ascorbic acid (AA) in their drinking water. The birds were subsequently subjected to either upright handling (UH) or inverted (IH) handling for about 45 s. Heterophil (H) counts, lymphocyte (L) counts, and H/L ratios (H/L) ratios were determined immediately (T0) and at 20 h (T20) following the handling treatment. The H/L ratios were similar for both groups at T0, whereas 20 h after the handling treatment, AA-supplemented birds had lower ratios than controls, resulting in a significant water treatment x time of blood sampling interaction. Inverted handling had negligible effect on H/L ratios but augmented tonic immobility (TI) durations as compared with UH. Irrespective of handling procedure, supplemental AA reduced underlying fearfulness, as measured by TI reaction. Neither water treatment nor handling method had significant effect on number of attempts to induce TI.
    Matched MeSH terms: Ascorbic Acid/administration & dosage; Ascorbic Acid/pharmacology*
  5. History of scurvy and use of vitamin C in critical illness: A narrative review
    Dresen E, Lee ZY, Hill A, Notz Q, Patel JJ, Stoppe C
    Nutr Clin Pract, 2023 Feb;38(1):46-54.
    PMID: 36156315 DOI: 10.1002/ncp.10914
    In 1747, an important milestone in the history of clinical research was set, as the Scottish surgeon James Lind conducted the first randomized controlled trial. Lind was interested in scurvy, a severe vitamin C deficiency which caused the death of thousands of British seamen. He found that a dietary intervention with oranges and lemons, which are rich in vitamin C by nature, was effective to recover from scurvy. Because of its antioxidative properties and involvement in many biochemical processes, the essential micronutrient vitamin C plays a key role in the human biology. Moreover, the use of vitamin C in critical illness-a condition also resulting in death of thousands in the 21st century-has gained increasing interest, as it may restore vascular responsiveness to vasoactive agents, ameliorate microcirculatory blood flow, preserve endothelial barriers, augment bacterial defense, and prevent apoptosis. Because of its redox potential and powerful antioxidant capacity, vitamin C represents an inexpensive and safe antioxidant, with the potential to modify the inflammatory cascade and improve clinical outcomes of critically ill patients. This narrative review aims to update and provide an overview on the role of vitamin C in the human biology and in critically ill patients, and to summarize current evidence on the use of vitamin C in diverse populations of critically ill patients, in specific focusing on patients with sepsis and coronavirus disease 2019.
    Matched MeSH terms: Ascorbic Acid/pharmacology; Ascorbic Acid/therapeutic use
  6. Intravenous ascorbic acid as a treatment for severe jellyfish stings
    Kumar S, Miranda-Massari JR, Gonzalez MJ, Riordan HD
    P R Health Sci J, 2004 Jun;23(2):125-6.
    PMID: 15377062
    We report a case of jellyfish envenomation in a 39 year old male. He was stung extensively on both lower limbs by an unidentified jellyfish. This occurred in shallow waters of a beach in the vicinity of Labuan Island, Malaysia. The patient received ambulatory treatment with parenteral and oral ascorbate with remarkable recovery.
    Matched MeSH terms: Ascorbic Acid/administration & dosage; Ascorbic Acid/therapeutic use*
  7. Fulltext Crystal deposits in cornea from the use of vitamin C eye drops
    Choong YY, Arumugam G
    Med J Malaysia, 1999 Dec;54(4):526-7.
    PMID: 11072476
    There are a number of differential diagnoses for crystal deposits in the cornea. With the presence of a corneal epithelial defect, the differential diagnosis can be narrowed down to either infective causes or deposits from topical medications. This report describes a case of crystal deposits in the cornea from the use of Vitamin C eye drops.
    Matched MeSH terms: Ascorbic Acid/administration & dosage; Ascorbic Acid/adverse effects*
  8. Suitability of combination of calcium propionate and chitosan for preserving minimally processed banana quality
    Mirshekari A, Madani B, Golding JB
    J Sci Food Agric, 2017 Aug;97(11):3706-3711.
    PMID: 28111769 DOI: 10.1002/jsfa.8231
    BACKGROUND: The marketability of fresh-cut banana slices is limited by the rapid rate of fruit softening and browning. However, there is no scientific literature available about the role of postharvest calcium propionate and chitosan treatment on the quality attributes of fresh-cut banana. Therefore, the aim of the present study was to investigate these effects.

    RESULTS: The application of calcium propionate plus chitosan (CaP+Chit) retained higher firmness, higher ascorbic acid content, higher total antioxidant activity and higher total phenolic compounds, along with lower browning, lower polyphenol oxidase, lower peroxidase, lower polygalacturonase and lower pectin methyl esterase activities and microbial growth, compared to control banana slices after 5 days of cold storage.

    CONCLUSION: The results of the present study show that CaP+Chit could be used to slow the loss of quality at the same time as maintaining quality and inhibiting microbial loads. © 2017 Society of Chemical Industry.

    Matched MeSH terms: Ascorbic Acid/analysis; Ascorbic Acid/metabolism
  9. Fulltext Simultaneous time-temperature-thickness superposition theoretical and statistical modelling of convective drying of guava
    Kek SP, Chin NL, Yusof YA
    J Food Sci Technol, 2014 Dec;51(12):3609-22.
    PMID: 25477628 DOI: 10.1007/s13197-013-0923-0
    Modelling studies of guava drying and quality are presented using theoretical and statistical models by varying temperature from 55 to 75 °C and slice thickness from 3 to 9 mm. The quality of dried fruit was measured for its water activity, colour, vitamin C, and texture. The superposition technique with Midilli-Kucuk model showed efficiency in modelling the drying process with R (2)  = 0.9991. The second-order polynomial equations adequately described the quality of dried guava with regression coefficient, R (2)  > 0.7. Drying time was a good function of temperature and thickness (P 
    Matched MeSH terms: Ascorbic Acid
  10. Fulltext Callus cell proliferation from broccoli leaf slice using IBA and BAP in vitro culture: Its biochemical and antioxidant properties
    Sharif Hossain AB, Haq I, Ibrahim NA, Aleissa MS
    Data Brief, 2016 Mar;6:214-20.
    PMID: 26862562 DOI: 10.1016/j.dib.2015.11.061
    Plant tissue or cell culture keeps a significant role in micro-propagation in the plant production industry. Combination of 6-Benzylaminopurine (BAP) and other plant growth regulators like 1-Naphthaleneacetic acid (NAA) or Indole-3-acetic acid (IAA) or indole-3-butyric acid (IBA) was used in the most of the research in tissue culture. The study was carried out to investigate the optimization of the concentration of IBA and BAP combination (0, 0.25, 0.50, 1.0, 1.50, 2.0, 2.5, 3.0 and 3.5 mg/l) for the root, callus and leaf proliferation from the leaf cutting slice. The highest number (6.75) of root proliferation was observed in the concentration of 2.0 mg/l IBA+0.25 mg/l BAP combination. The callus initiation was found in the concentration of IBA 1.0-3.5 mg/l+BAP 1.0-2.0 mg/l. However, the highest callus weight was observed at the concentration of IBA 1.5 mg/l+BAP 1.0 mg/l combination than other combination of concentrations. Positively leaf initiation and formation was better in the concentration of IBA 1-3.5 mg/l+BAP 1.0-2.0 mg/l combination. In addition, the 2,2-diphenyl-2-picrylhydarzyl (DPPH) free radical scavenging potential was higher (70.1%) in leaves extract than in callus extracts (46.3%) at the concentration of 10 mg/ml though both extracts had lower DPPH free radical scavenging activity compared to the positive control, vitamin C and BHT. Theresults conclude that the optimum concentration was IBA 1.5 mg/l+BAP 1.0 mg/l combination to produce callus cell proliferation and concentration of 2.0 mg/l IBA+0.25 mg/l BAP combination was the optimum for root proliferation of broccoli in vitro.
    Matched MeSH terms: Ascorbic Acid
  11. Plasma vitamins A, C and E in the general population of Singapore, 1993 to 1995
    Hughes K, New AL, Lee BL, Ong CN
    Ann Acad Med Singap, 1998 Mar;27(2):149-53.
    PMID: 9663300
    The National University of Singapore Heart Study measured cardiovascular risk factors, including selected plasma vitamins, on a random sample of the general population aged 30 to 69 years. Plasma vitamins A and E were normal and similar by ethnic group. Mean plasma vitamin A levels were: Chinese (males 0.68 and females 0.52 mg/L), Malays (males 0.67 and females 0.54 mg/L), and Indians (males 0.66 and females 0.51 mg/L). Mean plasma vitamin E levels were: Chinese (males 12.6 and females 12.6 mg/L), Malays (males 13.6 and females 13.3 mg/L), and Indians (males 12.9 and females 12.8 mg/L). No person had plasma vitamin A deficiency (< 0.01 mg/L) and only 0.1% had vitamin E deficiency (< 5.0 mg/L). In contrast, plasma vitamin C was on the low side and higher in Chinese than Malays and Indians. Mean plasma vitamin C levels were: Chinese (males 6.3 and females 8.4 mg/L), Malays (males 5.1 and females 6.4 mg/L), and Indians (males 5.7 and females 6.9 mg/L). Likewise, the proportions with plasma vitamin C deficiency (< 2.0 mg/L) were lower in Chinese (males 14.4 and females 0.7%), than Malays (males 19.7 and females 7.2%), and Indians (males 17.8 and females 11.0%). Relatively low levels of plasma vitamin C may contribute to the high rates of coronary heart disease and cancer in Singapore. In particular, lower plasma vitamin C in Malays and Indians than Chinese may contribute to their higher rates of coronary heart disease. However, plasma vitamin C does not seem to be involved in the higher rates of cancer in Chinese than Malays and Indians. The findings suggest a relatively low intake of fresh fruits and a higher intake is recommended. Also, food sources of vitamin C may be destroyed by the high cooking temperatures of local cuisines, especially the Malay and Indian ones.
    Matched MeSH terms: Ascorbic Acid/blood*; Ascorbic Acid Deficiency/blood
  12. Fulltext A Comprehensive Review on Chemical and Pharmacological Potential of Viola betonicifolia: A Plant with Multiple Benefits
    Rizwan K, Khan SA, Ahmad I, Rasool N, Ibrahim M, Zubair M, et al.
    Molecules, 2019 Aug 29;24(17).
    PMID: 31470508 DOI: 10.3390/molecules24173138
    Viola betonicifolia (Violaceae) is commonly recognized as "Banafsha" and widely distributed throughout the globe. This plant is of great interest because of its traditional, pharmacological uses. This review mainly emphases on morphology, nutritional composition, and several therapeutic uses, along with pharmacological properties of different parts of this multipurpose plant. Different vegetative parts of this plant (roots, leaves, petioles, and flowers) contained a good profile of essential micro- and macronutrients and are rich source of fat, protein, carbohydrates, and vitamin C. The plant is well known for its pharmacological properties, e.g., antioxidant, antihelminthic, antidepressant, anti-inflammatory, analgesic, and has been reported in the treatment of various neurological diseases. This plant is of high economic value. The plant has potential role in cosmetic industry. This review suggests that V. betonicifolia is a promising source of pharmaceutical agents. This plant is also of significance as ornamental plant, however further studies needed to explore its phytoconstituents and their pharmacological potential. Furthermore, clinical studies are needed to use this plant for benefits of human beings.
    Matched MeSH terms: Ascorbic Acid
  13. One-pot green synthesis of highly reduced graphene oxide decorated with silver nanoparticles
    Nur Suhaili Abd Aziz, Muhammad Khairullah Nor Azmi, Abdul Manaf Hashim
    Sains Malaysiana, 2017;46:1083-1088.
    A one-pot green sonochemical process assisted by ascorbic acid as the reducing agent to produce highly reduced graphene oxide (rGO) decorated with silver nanoparticles (AgNPs) is demonstrated. A complete removal of oxygen-containing group in the GO sheets was confirmed by no observation of the peak corresponds to C-O, C=O and -OH bond. The unexpected decrease of peak intensity corresponds to sp2 hybridized C=C group is explained by a so-called bond polarity effect. The peak observed at ~400 nm seems to show the presence of AgNPs and the red shifting of C=C peak to ~270 nm after the introduction of ascorbic acid indicates the formation of highly reduced GO. The increase of AgNPs size and the crumpled silk-like morphology after the introduction of ascorbic acid also indicate the aggressive reduction of both AgNPs and GO. The increase of ID/IG ratio after the introduction of ascorbic acid seems to indicate the increase of the number of small sp2 domains, the presence of unrepaired defects and the restoration of the sp2 network. This work provides the promising green sonochemical approach by utilizing non-toxic and environmental-friendly reducing agent to produce highly reduced GO decorated with AgNPs for various applications.
    Matched MeSH terms: Ascorbic Acid
  14. Fulltext Cytomegalovirus retinitis associated with high CD4 counts and DHEA abuse
    Keat GY, Ahmad SS, Subramaniam S, Ghani SA, Samsudin A
    Indian J Sex Transm Dis AIDS, 2020 06 18;41(1):119-122.
    PMID: 33062999 DOI: 10.4103/ijstd.IJSTD_90_15
    The most frequent ocular manifestation of acquired immunodeficiency syndrome (AIDS) is cytomegalovirus retinitis (CMVR). This infection is reportedly inversely proportional to the CD4 counts. Usually CMVR develops once the CD4 counts fall below 50/mm3. Our case report documents an AIDS patient who developed CMVR despite CD4 counts being persistently >200/mm3. The patient was self-administering dehydroepiandrosterone, high dose Vitamin C, testosterone and hydrocortisone. This case report describes a unique case of pharmacologically induced elevated CD4 counts, which however, did not prevent the development of CMVR in the patient.
    Matched MeSH terms: Ascorbic Acid
  15. Fulltext Browning metabolism and quality of fresh-cut drumstick (Moringa oleifera) as influenced by acidulant treatments
    Siddiqui MW, Homa F, Nayyer MA, Ghatak A, Yousuf B, Aftab MA, et al.
    J Food Sci Technol, 2020 Jun;57(6):2010-2016.
    PMID: 32431327 DOI: 10.1007/s13197-019-04233-3
    Though fresh-cut products save our time, but they are very much prone to enzymatic browning that drastically affects product's quality and marketability. Drumstick pods are considered as super food due to high nutritional contents. However, the fresh-cut pods are prone to brown discoloration. The enzyme activities promote the softening and cut-surface browning of pods, thus deteriorates their texture, decreases consumer appeal and shortens the shelf life. So, we aimed to assess the effect of citric (1%) and ascorbic (1%) acid treatments on quality attributes of fresh-cut drumsticks at 3-d interval during storage (5 ± 1 °C). In general there was an increase in lignin and quinone contents, while phenolic content was decreased during storage. However, samples subjected to ascorbic acid dip had higher phenolic content, lower rate of lignin formation, and reduced membrane permeability. Enzyme activities (polyphenol oxidase and peroxidase) were found to increase during storage, however, samples treated with ascorbic acid showed lower activities than that of the control and citric acid treated samples. The reduced enzyme activities resulted in the reduced browning incidence and maintained the quality. Therefore, postharvest dip of fresh-cut drumstick in to ascorbic acid (1%) could be suggested to increase the shelf life with reduced browning during low temperature storage.
    Matched MeSH terms: Ascorbic Acid
  16. Formation of high-density crystalline-shape gold nanoparticles on indium tin oxide surfaces: effects of alcohothermal seeding
    Umar AA, Salleh MM, Majlis BY, Oyama M
    J Nanosci Nanotechnol, 2011 Jun;11(6):4974-80.
    PMID: 21770130
    We found that the gold nanoparticles with high-density and crystalline-shape, such as nanocubes, nanobricks, pentahedral nanorods, etc., can be realized on the surface by using a seed-mediated growth method with a unique seeding process, namely alcohothermal. By using a conventional growth solution that contains HAuCl4, cetyltrimethylammonium bromide, NaOH and ascorbic acid, gold nanoparticles with crystalline-morphology (gold nanocrystals) of yield up to ca. 95%, can be prepared. An alcohothermal seeding was carried out by a thermal reduction of gold ions from an alcoholic solution of gold salt on the surface through an annealing process at a moderate temperature, namely 250 degrees C. It is believed that the unique initial characteristic (presumably the structures) of the gold nanoseeds particles as the result of peculiar nanoseeds formation process, prepared using this approach, instead of a simple thermal restructuring of the as prepared nanoseeds as confirmed by the results of annealing treatment on the nanoseed prepared using the normal and in-situ reduction seeding, was as the driving factor for the projected growth of crystalline-shape gold nanoparticles on the surface. The crystalline-shape gold nanoparticles modified-surface should find a potential application in catalysis, sensors and SERS.
    Matched MeSH terms: Ascorbic Acid
  17. Fulltext Effective jam preparations from watermelon waste
    Souad, A.M., Jamal, P., Olorunnisola, K.S.
    International Food Research Journal, 2012;19(4):1545-1549.
    MyJurnal
    Watermelon waste materials remained one of the important food grade agro-wastes generated by most hospitality industries in Southeast Asia and particularly in Malaysia. Jam was prepared from watermelon rind with different flavours (vanilla, pineapple, strawberry, lemon and no flavour). Five different samples were prepared at various compositions T₁ (50-50), T₂ (80-20), T₃ (60-40), T₄ (40-60) and T₅ (20-80) of rind and sugar. T₁ (50-50) gave the best jam set. Ten man panel (trained) evaluated the jam for its sensory characteristics and physicochemical analysis. Sensory evaluation conducted among five flavours was significantly different at (p>0.05). Chemical analysis showed that ascorbic acid reduced greatly among all treatments during three month storage. Soluble sugar and pH also decreased gradually for T₁ (from 4.96 to 4.40), T₂ (from 4.92 to 4.21), T₃ (from 4.74 to 4.11), T₄ (from 4.62 to 4.51) and T₅ (from 4.52 to 4.25) upon storage. Strawberry flavoured jam was most acceptable by the panel.
    Matched MeSH terms: Ascorbic Acid
  18. Fulltext Studies on the physicochemical and sensory characteristics of goat's milk dadih incorporated with tropical-fruit purees
    Chye, S.J., Ahmad, R., Noor Aziah, A.A.
    International Food Research Journal, 2012;19(4):1387-1392.
    MyJurnal
    This study was carried out to improve the nutritional value of goat’s milk dadih by the addition of tropical-fruit purees, namely, jackfruit (Artocarpus heterophyllus, Lam.), pineapple (Ananas comosus) and papaya (Carica papaya). Dadih with added fruits were compared with the control (without fruit puree) for physical, chemical and sensory attributes. The texture properties of the tropical- fruit dadih were significantly different (p< 0.05) from the control. Control dadih showed highest values for lightness and hue (p< 0.05) as compared to tropical- fruit dadih. The addition of tropical- fruit purees significantly increased (p< 0.05) the moisture, protein, ash and vitamin C contents of the fruit added dadih. There were no significant differences (p> 0.05) in the fat, carbohydrate, energy and total soluble solid contents. Sensory evaluations using a hedonic test showed that all dadih were acceptable. Overall, syneresis of the dadih increased with decreasing pH throughout storage at 4°C.
    Matched MeSH terms: Ascorbic Acid
  19. Fulltext Drying characteristics and quality evaluation of kiwi slices under hot air natural convective drying method
    Siew, E.S., Chin, S.K., Soon, W.L.
    International Food Research Journal, 2015;22(6):2188-2195.
    MyJurnal
    Dried kiwis are highly needed in food industries such as cereals, ice-cream, beverages and supplemental products. In this paper, drying characteristics and product quality of hot air dried kiwi slices were studied. Hot air drying of kiwi slices was investigated at drying temperature ranged from 40°C to 60°C and slice thickness of 0.3 cm and 0.6 cm. Results showed that drying of kiwi slices at higher drying temperature stimulates the drying rate, which leads to shorter total drying time required. The drying kinetics of kiwi slices was best fitted by approximation diffusion model. Increased in drying temperatures and slice thickness of kiwi enhanced the effective moisture diffusivity (Deff). The highest Deff of the kiwi slices was recorded as 1.5681 x 10-8 m2 /min at slice thickness of 0.6 cm. In terms of quality analysis, kiwi slices dried at temperature of 60°C with fastest drying rate retained most of the Total Phenolic Content (TPC) in the dried sample. However, drying of kiwi slices at high drying temperature deteriorated the vitamin C content of kiwi slices due to thermal degradation. Thinner kiwi slices could preserve higher amount of TPC and vitamin C during the drying process, yet the best hot air drying temperature for drying of kiwi slices could be relied on the consumers’ preference based on the dried product quality as reported in the current work.
    Matched MeSH terms: Ascorbic Acid
  20. Fulltext Extending ‘Kampuchea’ guava shelf-life at 27oC using 1-methylcyclopropene
    Phebe, D., Ong, P.T.
    International Food Research Journal, 2010;17(1):63-69.
    MyJurnal
    ‘Kampuchea’ guavas were treated with 300, 600 and 900 nL L‾¹ 1-methylcyclopropene (1-MCP) for 0,
    3 and 6 h, and stored at 27˚C with 70% relative humidity. The C* values, soluble solids concentration, titratable acidity and pH of these fruits were not affected by both the 1-MCP concentrations and exposure duration while h˚ values and flesh firmness were affected by these treatments. The L* values, vitamin C content and weight loss were affected by the concentrations of 1-MCP, but not by the exposure duration. Less weight loss and disease incidence in fruit treated with 600 and 900 nL L-1 1-MCP. Fruit exposed to 6 h 1-MCP showed lowest disease incidence compared to other exposure duration in 5 days of storage. Treating Kampuchea guava fruit with 600 nL L‾¹ 1-MCP and exposure duration of 6 h was able to retain fruit colour, flesh firmness and delayed disease development for 5 days.
    Matched MeSH terms: Ascorbic Acid
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