Potential antioxidant and lipid peroxidation inhibition of coffee mixed with lemongrass (Cymbopogon citrates) leaves

被引:5
|
作者
El-Anany, Ayman [1 ]
Althwab, Sami [2 ]
Ali, Rehab [2 ]
Ali, Rehab F. M. [3 ]
Mousa, Hassan [2 ]
机构
[1] Agr Res Ctr, Food Technol Res Inst, Special Food & Nutr Dept, Cairo, Egypt
[2] Qassim Univ, Dept Food Sci & Human Nutr, Coll Agr & Vet Med, Buraydah, Saudi Arabia
[3] Cairo Univ, Dept Biochem, Fac Agr, Giza, Egypt
来源
NUTRITION & FOOD SCIENCE | 2021年 / 51卷 / 08期
关键词
Coffee; Antioxidant; Oxidative stability; Lemongrass; Phenolics; CHEMICAL-COMPOSITION; EXTRACT; OIL; PRESERVATION; FLAVONOIDS;
D O I
10.1108/NFS-01-2021-0036
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Purpose The purpose of this study is to evaluate the effect of the addition of dried lemongrass leaves (DLGL) powder, at different levels, on phenolics content, antioxidant activities, consumer acceptance and the inhibition of lipid peroxidation of roasted coffee (RC). Design/methodology/approach DLGL powder was incorporated at the levels of 0%, 2.5%, 5.0%, 7.5% and 10% of RC weight. The total flavonoids (TF), total phenolics (TP) and antioxidant activity measured using a 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and reducing power assay of RC, DLGL and binary mixture of them determined. The oxidative indices of coffee oil samples during storage were investigated. In addition, the sensory characteristics of RC fortified with different levels of DLGL powder were evaluated. Findings The TP content of DLGL powder was 1,100.32 mg/100 g DWb, nearly 1.2 times higher than found in RC beans. The TF content of RC enriched with 2.5%, 5.0%, 7.5% and 10% DLGL were found to be around 1.05, 1.10, 1.15 and 1.20 times higher than that in the control coffee samples. RC supplemented with various levels of DLGL powder showed higher DPPH radical scavenging and reducing power activities. At the end of the storage period (six months), the acid, peroxide, P-Anisidine and total oxidation value values of RC supplemented with 10% DLGL powder were about 1.94, 2.52, 2.60 and 2.59 times as low as in the control sample without any addition of DLGL powder, respectively. RC containing 2.5% and 5.0% DLGL powder had significantly (p < 0.05) the highest sensory scores. Consequently, the addition of DLGL in coffee at up to a 5% ratio may have potential health benefits. Practical implications RC containing 2.5% and 5.0% DLGL powder had significantly (p = 0.05) the highest sensory scores. Originality/value Consequently, the addition of DLGL in coffee at up to a 5% ratio may have potential health benefits.
引用
收藏
页码:1194 / 1206
页数:13
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