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投稿时间：2021-01-21
投稿时间：2021-01-21
中文摘要: 对Pb2+耐受浓度在6 000 mg/L以上的异常威克汉姆酵母（Wickerhamomyces anomalus）QI-1-6、QI-1-7、QD-2-8进行体外试验。结果表明，3株酵母菌均具有一定的抗氧化能力，且菌悬液的抗氧化能力显著高于无细胞提取物，W.anomalus QI-1-6菌悬液抑制脂质过氧化能力达到（144.72±4.53）μg/mL；W.anomalus QI-1-7菌悬液对DPPH自由基、羟基自由基和超氧阴离子自由基的清除能力分别达到（85.09±1.11）、（240.88±7.69）、（171.41±6.92）μg/mL。W.anomalus QI-1-7随着pH值、吸附时间和菌体浓度增加，吸附Pb2+能力上升；Pb2+初始浓度增加，吸附率下降显著；温度增加，吸附Pb2+能力呈先上升后下降趋势。
Abstract:Wickerhamomyces anomalus strains QI-1-6,QI-1-7,and QD-2-8 which display tolerance to Pb2+concentrations above 6 000 mg/L were assessed in vitro.All three yeast strains displayed antioxidant capacity,and the antioxidant capacity of each yeast suspension was significantly higher than that of each acellular extract.W.anomalus QI-1-6 suspension yielded the highest inhibition of lipid peroxidation（144.72±4.53）μg/mL.QI-1-7 displayed the highest scavenging capacities toward DPPH and hydroxyl radicals and superoxide anions at（85.09±1.11）μg/mL，（240.88±7.69）μg/mL，and（171.41±6.92）μg/mL,respectively.With increasing pH,adsorption time,and cell concentration，the adsorption capacity of W.anomalus QI-1-7 increased;with increasing initial Pb2+concentration,the adsorption rate decreased significantly.With increasing temperature,the adsorption capacity of W.anomalus QI-1-7 initially increased,then decreased.
文章编号：202110027 中图分类号： 文献标志码：
基金项目:内蒙古自治区自然科学基金项目（2017MS0324）；内蒙古自治区科技成果转化项目（CGZH2018145）；内蒙古自治区研究生科研创新项目（S20191166Z）
| Author Name | Affiliation |
| ZHANG Feng-sheng，LI Li-jie，HE Yin-feng | College of Food Science and Engineering，Inner Mongolia Agricultural University，Hohhot 010018，Inner Mongolia，China |
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