Hợp chất thứ cấp và hoạt tính kháng oxy hóa của bộ giống lúa nếp rẫy, lúa mùa trên một số giống lúa bản địa Việt Nam=Phytochemical constituents and antioxidant activities of upland and traditional rice collection in Vietnam

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Tác giả: Kỳ Huỳnh, Như Điền Huỳnh, Lê Đức Huy Nguyễn, Lộc Hiền Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Lâm nghiệp, 2024

Mô tả vật lý: tr.3-10

Bộ sưu tập: Metadata

ID: 253126

Thêm vào giỏ

Ngày nay, nhu cầu sử dụng các giống gạo màu ngày càng được chú trọng nhiều hơn do những lợi ích mà các loại gạo này mang lại. Mục tiêu của nghiên cứu này nhằm khảo sát hàm lượng polyphenol tổng số (bằng phương pháp Folin- Ciocalteu), hàm lượng flavonoid (bằng phương pháp so màu AlCl3) và hàm lượng anthocyanin bằng sử dụng Cyanidin 3-glucosidase ở 17 mẫu giống lúa rẫy và lúa mùa địa phương. Kết quả cho thấy, giống Nếp Cẩm và Blẩu Sáng có hàm lượng anthocyanin lần lượt là 401,29±1,30 mg Cy3-GE/g và 374,44±2,17 mg Cy3-GE/g, cao hơn các giống còn lại. Giống Nếp Cẩm, Blẩu Sáng cũng có hàm lượng polyphenol tổng số cao lần lượt là 260,65±4,37
258,60±3,44 mg GAE/100 g và khác biệt có ý nghĩa thống kê với các giống còn lại. Hàm lượng flavonoid thể hiện cao nhất ở giống Blẩu Sáng (207,11±1,67 mg GAE/100 g). Kết quả cũng cho thấy hầu hết các giống có vỏ lụa màu tím có hàm lượng anthocyanin, polyphenol và flavonoid tổng số cao hơn vỏ lụa màu đỏ và màu trắng. Hoạt tính kháng oxy hóa thể hiện các giống lúa có vỏ lụa màu tím có khả năng kháng oxy hóa mạnh hơn so với nhóm giống lúa có vỏ lụa màu đỏ và màu trắng. Đây là nguồn vật liệu tốt phục vụ cho công tác lai tạo giống mới theo hướng thực phẩm chức năng đáp ứng yêu cầu tiêu thụ trong nước và xuất khẩu.Nowadays, the color rice varieties are popular to use because of their benefits. The main goal of this research was to determine the total polyphenol content (by Folin-Ciocalteu method), flavonoid content (by AlCl3 colorimetric method), and anthocyanin content using Cyanidin 3-glucosidase of the 17 upland and traditional rice varieties. The results showed that Nep Cam and Blau Sang varieties had anthocyanin content with the value of 401.29 ± 1.30 mg Cy3-GE/g and 374.44±2.17 mg Cy3-GE/g, respectively, higher than the remaining varieties. Nep Cam and Blau Sang varieties also showed high total polyphenol content with the value of 260.65±4.37
258.60±3.44 mg GAE/100 g, respectively, and were statistically significantly different from the remaining varieties. Blau Sang variety also showed the highest flavonoid content (207.11 ±1.67 mg GAE/100g). Among the diffrrent brown rice color, the varieties with purple pericarp had higher anthocyanin, total polyphenol and total flavonoid content than the red and white pericarps. The antioxidant activity showed that the purple pricarps rice varieties had stronger antioxidant capacity than the red and white pericarps rice varieties. This is a good source of materials for breeding new varieties in the direction of functional foods to meet domestic consumption and export requirements.

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