Nutritional, chemical and antioxidant/pro-oxidant profiles of silverskin, a coffee roasting by-product

被引：110

作者：

Costa, Anabela S. G. ^{[1
]}

Alves, Rita C. ^{[1
]}

Vinha, Ana F. ^{[1
,2
]}

Costa, Elisio ^{[3
]}

Costa, Catarina S. G. ^{[1
]}

Antonia Nunes, M. ^{[1
]}

Almeida, Agostinho A. ^{[1
]}

Santos-Silva, Alice ^{[3
]}

Oliveira, M. Beatriz P. P. ^{[1
]}

机构：

[1] Univ Porto, Dept Chem Sci, REQUIMTE LAQV, Fac Pharm, R Jorge Viterbo Ferreira 228, P-4050313 Porto, Portugal

[2] Univ Fernando Pessoa, CEBIMED Biomed Res Ctr, FP ENAS UFP Energy Environm & Hlth Res Unit, R Carlos da Maia 296, P-4200150 Porto, Portugal

[3] Univ Porto, Fac Pharm, REQUIMTE UCIBIO, R Jorge Viterbo Ferreira 228, P-4050313 Porto, Portugal

来源：

FOOD CHEMISTRY | 2018年 / 267卷

关键词：

By-product; Nutritional composition; Dietary fibre; Macrominerals; Vitamin E; Antioxidant and pro-oxidant activity; Hemolysis inhibition; INDUCED OXIDATIVE DAMAGE; RED-BLOOD-CELLS; VITAMIN-E; EXTRACTION; OPTIMIZATION; HEMOGLOBIN; PROTECTION; HEMOLYSIS; CAFFEINE; DISEASE;

D O I：

10.1016/j.foodchem.2017.03.106

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Coffee silverskin (a coffee roasting by-product) contains high amounts of dietary fibre (49% insoluble and 7% soluble) and protein (19%). Potassium (similar to 5 g/100 g), magnesium (2 g/100 g) and calcium (0.6 g/100 g) are the major macrominerals. The vitamin E profile of silverskin comprises alpha-tocopherol, beta-tocopherol, gamma-tocopherol, delta-tocopherol, beta-tocotrienol, gamma-tocotrienol, and delta-tocotrienol. The fatty acid profile is mainly saturated (C16:0 and C22:0), but the total amount of fat is low (2.4%). Caffeine (1.25 g/100 g), chlorogenic acid (246 mg/100 g), and 5-hydroxymethylfurfural (5.68 mg/100 g) are also present in silverskin. Total phenolics and flavonoids are partially responsible for the in vitro antioxidant activity. Silverskin extracts protected erythrocytes from oxidative AAPH-and H2O2-induced hemolysis, but at high concentrations a pro-oxidant effect on erythrocyte morphology was observed. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：28 / 35

页数：8

共 34 条

[1] Protection against hydrogen peroxide induced oxidative damage in rat erythrocytes by Mangifera indica L. peel extract [J].