Yamuangmorn Supapohn, Saenjum Chalermpong, Prom-U-Thai Chanakan
Lanna Rice Research Center, Chiang Mai University, Chiang Mai 50200, Thailand.
Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
Food Chem X. 2024 Nov 15;24:102005. doi: 10.1016/j.fochx.2024.102005. eCollection 2024 Dec 30.
This study assessed the effect of germination on bioactive compounds in fresh and one-year-old seeds of pigmented and non-pigmented rice varieties. Rice varieties had similar changes in bioactive compounds during germination. GABA and several phenolic acids increased 11.7 to 18.5 folds and 0.7 to 4.2 folds, respectively in germinating seeds. The vitamin E compounds, γ-tocotrienol and α-tocopherol increased by 23 to 35 % only in soaked seeds, but declined after seed germination. In the germinating seeds, higher levels of phenolic acids (e.g., protocatechuic acid, 0.5-fold higher) and some compounds of vitamin E (e.g., γ-tocotrienol, 0.4-fold higher) were observed in the pigmented rice compared to the non-pigmented line, in accordance with antioxidant activity. Additionally, one-year-old seeds exhibited the same increases in bioactive compounds as the fresh seeds. We conclude that the seeds of the pigmented variety have the potential as a raw material for germination in the rice industry.
本研究评估了发芽对有色和无色水稻品种新鲜种子及储存一年种子中生物活性化合物的影响。水稻品种在发芽过程中生物活性化合物有相似的变化。发芽种子中，γ-氨基丁酸（GABA）和几种酚酸分别增加了11.7至18.5倍和0.7至4.2倍。维生素E化合物γ-生育三烯酚和α-生育酚仅在浸泡种子中增加了23%至35%，但在种子发芽后下降。在发芽种子中，与无色品系相比，有色水稻中酚酸（如原儿茶酸，高出0.5倍）和一些维生素E化合物（如γ-生育三烯酚，高出0.4倍）含量更高，这与抗氧化活性一致。此外，储存一年的种子与新鲜种子中生物活性化合物的增加情况相同。我们得出结论，有色品种的种子有潜力作为水稻产业中发芽的原料。
