Some biochemical changes of early germinated Arabica coffee seeds (Coffea arabica L.) after treated by brassin-like substance

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Primluck Praphutphitthaya
Chantalak Tiyayon
Thaneeya Chetiyanukornkul
Tanachai Pankasemsuk

บทคัดย่อ

Effect of Brassin-like substance on chemical compositions of Arabica coffee seeds was studied during early germination. The substance has played an important role in promoting seed germination and chemical composi-tion during germination. In this study, coffee seeds were soaked in four Brassin-like substance (BS) concentrations 0, 0.5, 1.0 and 2.0 mg/L for 24 hours before germination test. Total sugars, protein and fat contents were determined at 0, 2, 4, 6 and 8 days after soaking. The study was conducted as 4 × 5 factorial in completely randomized design: CRD. The results revealed that BS application significantly effected on nutritional quality during early germination. Total sugars reached the highest amount at day 8 when soaked in 1.0 and 2.0 mg/L BS. As for protein content, coffee seeds in every treatment showed the greatest amount at day 4 of germination especially, of coffee seeds for ones soaked in 1.0 and 2.0 mg/L BS. Fat content gradually increased upon the first 4 days of germination. Coffee seeds in 1.0 and 2.0 mg/L BS showed higher fat content than the seeds soaked in 0 and 0.5 mg/L BS. Therefore, BS application could be a promising alternative regulator for enhancing coffee seed quality during early germination.

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