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294 results on '"Bowyer, Michael C."'

3. Potential Control of Postharvest Fungal Decay of Citrus Fruits by Crude or Photochemically Changed Essential Oils – a Review.

Author

Rahman, Mohammad M., Wills, Ron B.H., Bowyer, Michael C., Golding, John B., Kirkman, Timothy, and Pristijono, Penta

Subjects
CITRUS fruits, ESSENTIAL oils, ANTIFUNGAL agents, CHEMICAL resistance, MYCOSES, POSTHARVEST diseases
Abstract

Limiting postharvest losses of fruit from fungal attack is a major priority. While synthetic chemical fungicides are efficacious, the development of chemical resistance and consumer concerns are driving reinvestigation of natural antimicrobial agents. This review emphasizes the control of postharvest decay in citrus fruits with the use of some most common essential oils (EO), the efficacy of EOs in combating fungal infection in both in vitro and in vivo models, and the mode of action of EOs along with the potency of photochemical by-products that have also been investigated as antifungal agents. [ABSTRACT FROM AUTHOR]

Published
2024
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43. Multiple Amino Acids Inhibit Postharvest Senescence of Broccoli.

Author

Sohail, Muhammad, Howe Wills, Ron Baden, Bowyer, Michael C., and Pristijono, Penta

Subjects
BROCCOLI, POSTHARVEST technology of vegetables, PROTEIN synthesis, GLUTAMIC acid, CELLULAR aging, PHENYLALANINE
Abstract

The function of free amino acids in protein synthesis, as a source of energy and unique roles in catabolism have been well studied in plant development but their function in postharvest fruit and vegetables has received little attention. This study evaluated 11 amino acids—arginine, alanine, aspartic acid, glutamic acid, glycine, ornithine, phenylalanine, serine, tyrosine, tryptophan and valine—on the development of senescence of broccoli. Broccoli florets were dipped in 5 mM solution of amino acids, then stored at 10 ◦C in air containing 0.1 µL L−1 ethylene. Senescence was assessed by green life, ethylene production, respiration rate and ion leakage. Green life was increased by all the amino acids except valine. Similarly, ethylene production and ion leakage were decreased by all the amino acids except valine, while respiration rate was reduced by all amino acids. It is speculated that the early reduction in ethylene production could be the mechanism by which the amino acids delayed senescence. The beneficial effect of naturally occurring amino acids in inhibiting senescence has potential commercial relevance, as the amino acids have Generally Recognised As Safe (GRAS) status which should assist gain regulatory approval, and gain acceptance by consumers wary of synthetic chemicals on foods. [ABSTRACT FROM AUTHOR]

Published
2021
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44. Optimization of ultrasound-assisted extraction conditions for phenolic compounds and antioxidant capacity from Tuckeroo (Cupaniopsis anacardioides) fruit.

Author

Pham, Ngoc Minh Quynh, Vuong, Quan V., Bowyer, Michael C., and Scarlett, Christopher J.

Subjects
PHENOLS, OXIDANT status, PROANTHOCYANIDINS, FRUIT, ACETONE, FRUIT extracts, CONTENT analysis
Abstract

This study applied ultrasound-assisted extraction (UAE) to effectively extract phenolic compounds and antioxidant properties from the Tuckeroo fruits using Response Surface Methodology (RSM). The results showed that ultrasonic temperature and time, sample to solvent ratio and acetone concentration significantly affected extraction yields of total phenolic compounds (TPC), flavonoids (TFC), proanthocyanidins (TPro), as well as affecting antioxidant capacity. The optimized UAE experimental conditions were recommended to be 50°C, 60 min, 2:100 g/mL, and 60% acetone for any subsequent analysis of the content of phenolic compounds in the Tuckeroo fruits. The modified optimal conditions are recommended to be 40°C, 40 min, 5:100 g/mL, and 50% acetone. [ABSTRACT FROM AUTHOR]

Published
2020
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49. Microwave irradiation enhances the in vitro antifungal activity of citrus by-product aqueous extracts against Alternaria alternata

Author

Papoutsis, Konstantinos, primary, Vuong, Quan V., additional, Tesoriero, Len, additional, Pristijono, Penta, additional, Stathopoulos, Costas E., additional, Gkountina, Stela, additional, Lidbetter, Fiona, additional, Bowyer, Michael C., additional, Scarlett, Christopher J., additional, and Golding, John B., additional

Published
2018
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