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Item type:Publication, Preharvest calcium chloride sprays improving physicochemical quality of mulberries (Morus alba L. ‘Chiang Mai 60’) during refrigeration(2024-06-01); ; Ahuja, A. JunpatiwThe aim of this work was to investigate the efficiency of preharvest CaCl2 sprays on quality of ‘Chiang Mai 60’ mulberries during refrigeration. The mulberries at the stage of 40 days after anthesis were sprayed with water (control), 0.5 or 1% CaCl2. The fruits were then harvested after spraying for 5 days and refrigerated at 5°C for 6 days. The visual appearance, texture, total soluble solids (TSS) content, total acidity (TA), antioxidant activities and certain secondary metabolites of the mulberries were monitored. Both CaCl2 sprays had no effect on the visual appearance during storage. Both CaCl2 sprays enhanced fruit firmness and delayed the fruit softening during refrigeration. Both CaCl2 treatments delayed the increased TSS content and maintained the TA content. Total phenols, ascorbic acid and anthocyanin contents of the mulberries were enhanced by the CaCl2 sprays. Both CaCl2 sprays delayed the decreased antioxidant capacity and enhanced the free radical scavenging activity during the refrigeration. The efficiency of 0.5 and 1% CaCl2 preharvest sprays on improving postharvest quality of the mulberries was not different. This indicates that CaCl2 preharvest sprays improved postharvest quality of the mulberries which 0.5% CaCl2 is the suggested concentration.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Mulberroside A Accumulation in Mulberry Plantlets from In Vitro Culture and Hydroponic System(2023-12-29); Lohasupthawee, PanaIn this study, nodal explants cultured in MS medium supplemented with BAP 4mg/l and NAA 0.5 mg/l induced 3.33 shoots per explant within 4 weeks. The elongated multiple shoots were transferred to rooting media. The best root development was found on MS medium without PGRs within 10 days. The acclimatized plants were transferred to a deep-water hydroponic system with different concentrations of MS nutrient solution without sucrose addition. The results showed that mulberry plants cultivated in 1/8 MS nutrient solution gave the highest growth index. For mulberroside A determination, the results showed that mulberroside A accumulation in roots were higher than in shoots of mulberry plants both for in vitro culture and in the hydroponic system. In the case of in vitro culture, mulberroside A accumulation in roots was 20.61 mg/g DW, and in shoots was 11.98 mg/g DW. In hydroponic system, mulberroside A accumulation in roots was 17.58 mg/g DW, and in shoots was 2.34 mg/g DW. We also found that the higher concentration of MS nutrient solution, the more mulberroside A accumulation in roots of mulberry plants cultivated in the hydroponic system. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Growth and antioxidant system of Chinese kale microgreens in response to different illumination of light sources(2023-01-01); Photchanachai, SongsinLight-emitting diodes (LEDs) are commercially used as a light source to improve plant growth and antioxidants accumulation. Growth and antioxidant system in Chinese kale microgreens illuminated with blue, red and white LEDs and sunlight, as a control, with the same duration of illumination were investigated. The red LED with low light intensity significantly enhanced hypocotyl length and fresh weight of microgreens, while blue and white LEDs and sunlight showed fairly comparable effects. The synergistic effect of blue, green and red LEDs, as white LED was the most effective in enhancing the accumulation of secondary metabolites, namely, total glucosinolates, phenolic compounds and total ascorbic acid. Microgreens grown with blue and white LEDs showed higher DPPH (1,1-diphenyl-1-picrylhydrazyl) radical scavenging activity and ferric reducing antioxidant power, whereas ABTS [2,2’-Azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)] radical cation (ABTS) fared better under sunlight and blue LEDs. Overall, microgreens treated with red LED significantly reduced H<inf>2</inf>O<inf>2</inf> and lipid peroxidation by only secondary metabolites. While blue and white LEDs treated samples utilised secondary metabolites, as well as, catalase and ascorbate peroxidase when compared to less effective superoxide dismutase in the control samples. The results suggest that light wavelength was a majority factor in enhancement antioxidant accumulation.1