Chemical composition, structural and functional properties of soluble dietary fiber obtained from coffee peel using different extraction methods
Chemical composition, structural and functional properties of soluble dietary fiber obtained from coffee peel using different extraction methods
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不同提取方法从咖啡皮中提取的可溶性膳食纤维的化学成分、结构和功能特性
DOI：
10.1016/j.foodres.2020.109497
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发表时间：
2020-10-01
影响因子：
8.1
通讯作者：
Lv, Lishuang
中科院分区：
文献类型：
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作者：
Dong, Wenjiang;Wang, Dandan;Lv, Lishuang
本研究旨在评价化学、酶法、化学-酶法、超声辅助酶法和剪切乳化辅助酶法对咖啡皮可溶性膳食纤维理化、结构和功能特性的影响。结果表明，剪切乳化辅助酶法可获得最高的可溶性膳食纤维提取率，且酶法和剪切乳化辅助酶法可获得相似的蛋白质含量。与其他提取方法相比，剪切乳化辅助酶处理的保水能力（7.05 g/g）和持油能力（3.61 g/g）更高，但与化学、酶和化学-酶处理相比，乳化能力（58.50%）较低。剪切乳化-酶促法提取的咖啡皮可溶性膳食纤维对葡萄糖的吸收能力最高（228.06 mg/g），对亚硝酸盐离子的吸收能力最高（10.09 mg/g, pH = 2）。综上所述，剪切乳化辅助酶提法是提取咖啡皮可溶性膳食纤维最合适的方法。
This study aimed to evaluate the effects of chemical, enzymatic, chemical-enzymatic, ultrasound-assisted enzymatic, and shear emulsifying-assisted enzymatic extraction methods on the physicochemical, structural, and functional properties of soluble dietary fiber from coffee peel. We found that the highest extraction yield of soluble dietary fiber was obtained using the shear emulsifying-assisted enzymatic method, and that similar protein contents were obtained from coffee peel using the enzymatic and shear emulsifying-assisted enzymatic methods. Compared with the other extraction methods, shear emulsifying-assisted enzymatic processing resulted in a higher water-holding capacity (7.05 g/g) and oil-holding capacity (3.61 g/g), but a lower emulsifying capacity (58.50%) when compared with that of chemical, enzymatic, and chemical-enzymatic processings. The soluble dietary fiber obtained from coffee peel using shear emulsifying-assisted enzymatic extraction was also characterized by the highest glucose absorption activity (228.06 mg/g), and enzymatic processing resulted in the highest nitrite ion absorption capacity (10.09 mg/g, pH = 2). These results indicated that shear emulsifying-assisted enzymatic extraction method was the most appropriate extraction method for coffee peel soluble dietary fiber.