BỘ KHOA HỌC VÀ CÔNG NGHỆ
HỆ THỐNG THÔNG TIN KHOA HỌC VÀ CÔNG NGHỆ

Lọc theo danh mục
  • Năm xuất bản
    Xem thêm
  • Lĩnh vực
liên kết website
Lượt truy cập
 Lượt truy cập :  14,928,057

Trần Thị Hằng, Vũ Đình Ngọ, Quách Thị Thanh Vân, Nguyễn Đức Duy, Nguyễn Đức Tuân, Đàm Thị Thanh Hương; Nguyễn Đức Duy(1); 

OPTIMIZE PROCESS OF CAFFEINE EXTRACTION FROM FRESH GREEN TEA LEAVES BY SELECTIVE ADSORPTION METHOD

TỐI ƯU HÓA QUY TRÌNH TÁCH CAFEIN TỪ LÁ CHÈ XANH BẰNG PHƯƠNG PHÁP HẤP PHỤ CHỌN LỌC

Tạp chí Phân tích Hóa, Lý và Sinh học

2017

1

A highly efficient extraction of caffeine from fresh green tea leaves by using water as the extraction solvent, DM310 macroporous as a selective adsorbent and ethyl acetate as a desorption solvent was developed. This desorption solvent is a new bio-renewable agrochemical solvent, naturally produced by fermentation from corn derived feedstock, which has been recently considered as a very suitable and environmental benign solvent for food industrial applications. The optimum conditions to extract caffeine from Phu Tho province’s fresh green tea leaves determined maximum achieved extraction efficiency of caffeine with water using selective absorbent was obtained at 90 oC for 10 min with fresh green tea leaves/water ratio of 1/5 g/ml. The caffeine extraction efficiency achieved 86.7% with high purity.Keywords caffeine, DM310 macroporous, ethyl acetate, high purity, green solvent

Xem toàn văn