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Author: search.filters.author.Supapvanich, SuriyanSubject: search.filters.subject.Phytochemicals

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    Phytochemical screening and fruit quality of commercial eggplants
    (2021-01-01)
    Chokthaweepanich, Hathairat
    ;
    Sriwicha, Suwalak
    ;
    Auvuchanon, Anyamanee
    ;
    Supapvanich, Suriyan
    Ten commercial eggplant cultivars and two allies were collected from the Northeastern region of Thailand in order to examine fruit quality and screen for selected phytochemicals. Eggplants were classified into three species including Solanum torvum, S. violaceum and S. melongena. There were 10 cultivars in S. melongena (commercial eggplants) containing cv. ‘Makhuea kai tao khaw’, ‘Makhuea khuen’, ‘Makhuea pro chao phraya’, ‘Makhuea pro look lai’, ‘Makhuea pro muang’, ‘Makhuea tor lae kaew’, ‘Makhuea tor lae khaw’, ‘Makhuea yao kaew’, ‘Makhuea yao khaw’, and ‘Makhuea yao muang’. The analysis indicated that there were significant differences (p ≤ 0.05) in fruit quality traits including color, thickness, hardness, TSS and moisture. All samples could be divided into three groups based on fruit color including white, purple, and green group. The commercial eggplants had more thickness than S. torvum and S. violaceum, but these two species had more TSS contents than commercial eggplants. The results of phytochemical screening showed that S. torvum tended to have higher alkaloid, tannin, saponin and steroid contents from the staining technique. Furthermore, ‘Makhuea yao muang’ showed the highest DPPH radical scavenging capacity (49.33%) compared to all others. The principal component and cluster analysis based on correlation of fruit traits and phytochemicals showed that all commercial eggplants were clustered in the same group. The correlation analysis indicated that TSS contents positively correlated with saponin and steroid, while TSS contents negatively correlated with thickness and moisture contents. As this study, commercial eggplants showed higher fruit quality and antioxidant activity than related species.
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    Efficiency of low dose cyanocobalamin immersion on bioactive compounds contents of ready to eat sprouts (sunflower and daikon) and microgreens (red-amaranth) during storage
    (2020-02-01)
    Supapvanich, Suriyan
    ;
    Sangsuk, Punika
    ;
    Sripumimas, Sookmas
    ;
    Anuchai, Jatuporn
    The objective of this study was to investigate the efficiency of low dose cyanocobalamin (vitamin B<inf>12</inf>) immersion on biologically active compounds improvement of baby vegetables such as sunflower sprouts, daikon sprouts and red-amaranth microgreens during storage. The baby vegetables were dipped in water (control), 0.05 or 0.1 μM cyanocobalamin for 5 min and then stored at 4 ± 1 °C for 9 d. We found that cyanocobalamin immersion, especially at 0.1 μM, could induce antioxidant capacity and certain biologically active compounds such as total phenols and flavonoids concentrations of all baby vegetables when compared to control samples. Cyanocobalmin delayed the loss of ascorbic acid concentration in sunflower sprouts but had no influence on the change in ascorbic acid concentration of daikon sprouts and red-amaranth microgreens during storage. The treatments did not affect the changes in total chlorophylls and carotenoids concentrations of sunflower and daikon sprouts during storage. Interestingly, 0.1 μM cyanocobalamin immersion enhanced betacyanin, betaxanthin and total betalains concentrations of red-amaranth microgreens during storage. These results indicated that low dose cyanocobalamin, vitamin B<inf>12</inf>, is a new potential natural agent improving health beneficiary bioactive compounds in ready to eat baby vegetables during cold storage.