摘要
目的:以生活饮用水电解产生的3种不同负氧化还原电位值碱性电解水(alkaline electrolyzed water,AEW)为对象,研究其理化性质及抗氧化和缓解胃酸过多能力。方法:测定了AEW pH值、氧化还原电位(oxidation-reduction potential,ORP)、溶解性总固体(total dissolved solids,TDS)以及矿物质含量,研究AEW自由基清除率及抗脂质过氧化能力。模拟人工胃模型研究AEW体外中和胃酸能力。结果:AEW负ORP值与pH值呈极显著正相关(P<0.01)。AEW对超氧阴离子自由基、羟自由基、ABTS自由基清除率及抗脂质过氧化能力显著高于饮用水(P<0.05),其抗氧化能力与负ORP值呈显著正相关(P<0.01)。AEW具有中和胃酸能力且与饮用水相比有显著性差异(P<0.05),饮用水对胃酸有一定稀释作用。结论:电解生活饮用水产生的不同负ORP值AEW具有抗氧化性,抗氧化能力随负ORP值增大逐渐增强,具有缓解胃酸过多能力且效果与0.2%NaHCO_(3)溶液相当。
Objective:Alkaline electrolyzed water(AEW)produced by drinking water electrolysis with three different negative REDOX potential values was used to study its physical and chemical properties,antioxidant and gastric acid relieving capacity.Methods:The pH value,oxidation-reduction potential(ORP),total dissolved solids(TDS)and mineral content of AEW were determined,and the free radical scavenging rate and anti-lipid peroxidation ability of AEW were studied by spectrophotometry.The acid capacity of different water samples in vitro was studied by artificial gastric model.Results:The negative ORP value of AEW is positively correlated with the pH value(P<0.01).The scavenging rates of superoxide anion,hydroxyl radical,ABTS^(+) and anti-lipid peroxidation of alkaline electrolyzed water were significantly different from those of tap water(P<0.05),and the antioxidant capacity of AEW was positively correlated with the negative ORP value(P<0.01).The neutralization ability of AEW to artificial gastric acid in vitro was significantly different from that of tap water(P<0.05),and tap water has a certain dilution effect on gastric acid.Conclusion:AEW with different negative ORP value produced by electrolysis of tap water has antioxidant activity,which gradually increases with the increase of negative ORP value,and has the ability to relieve gastric acid excess,with equivalent effect of 0.2% NaHCO_(3).
作者
夏瑞
钟耕
李恬
杨万富
高羽歌
XIA Rui;ZHONG Geng;LI Tian;YANG Wang-fu;GAO Yu-ge(College of Food Science,Southwest University,Chongqing 400000,China)
出处
《食品与机械》
北大核心
2022年第3期1-7,共7页
Food and Machinery
基金
国家级创新创业训练计划项目(编号:202110635096)。
关键词
电解水
氧化还原电位
理化性质
抗氧化
胃酸
electrolytic water
negative oxidation-reduction potential(ORP)
physicochemical properties
antioxidant
gastric acid
