澄清处理对干红葡萄原酒中矿质元素的影响

Effects of clarification treatment on mineral elements in dry red grape raw wine

中文关键词:  干红葡萄原酒  澄清材料  矿质元素

英文关键词:dry red grape raw wine  clarification material  mineral elements

中文摘要:

      目的 测定澄清材料最佳澄清质量浓度下干红葡萄原酒中18种矿质元素的含量, 筛选最优的矿质元素澄清材料。方法 用不同质量浓度的明胶、蛋清粉、皂土、果胶酶、聚乙烯吡咯烷酮(polyvinyl-polypyrrolidone, PVPP)和壳聚糖溶液对干红葡萄原酒做澄清处理; 确定各澄清材料的最佳澄清质量浓度; 采用电感耦合等离子体质谱测定最佳澄清质量浓度下干红葡萄原酒中Al、Cr、Ni、Mn、Fe、Cu、Ca、Mg、Zn、Sr、Co、Mo、Sn、Sb、Pb、As、Hg、Cd元素的含量。结果 干红葡萄原酒明胶澄清的最佳质量浓度为0.4 mg/mL, 皂土为1.2 mg/mL, 蛋清粉为0.6 mg/mL, 果胶酶为1.2 mg/mL, PVPP为0.6 mg/mL, 壳聚糖为0.8 mg/mL; 干红葡萄原酒中Pb、As、Hg、Cd未检出, 经澄清处理后干红葡萄原酒中的矿质元素的含量有不同程度的下降, 其中壳聚糖的沉降效果最显著。结论 澄清处理可以降低干红葡萄酒中矿质元素的含量, 其中Fe和Cu元素的含量影响干红葡萄酒的口感和色泽, 重金属元素的含量影响干红葡萄酒的品质, 因此干红葡萄原酒的澄清材料既要能去除有害的金属元素还要尽可能保留营养元素。

英文摘要:

      Objective To determine the content of 18 kinds of mineral elements in dry red grape wine under the optimal concentration of clarifier materials and to screen the best clarifiers. Methods The dry red grape wine was clarified with different concentrations of gelatin, egg white powder, bentonite, pectinase, polyvinyl polypyrrolidone (PVPP) and chitosan solution, the contents of Al, Cr, Ni, Mn, Fe, Cu, Ca, Mg, Zn, Sr, Co, Mo, Sn, Sb, Pb, As, Hg and Cd in dry red grape wine were determined by inductively coupled plasma mass spectrometry at the optimum clarification concentration. Results The optimal concentration of gelatin for clarification of dry red grape wine was 0.4 mg/mL, bentonite was 1.2 mg/mL, egg white powder was 0.6 mg/mL, pectinase was 1.2 mg/mL, PVPP was 0.6 mg/mL, chitosan was 0.8 mg/mL, Pb, As, Hg and Cd in dry red grape wine were not detected, after clarification, the content of mineral elements in the dry red grape wine decreased to different degrees, and the sedimentation effect of chitosan was the most significant. Conclusion Clarification treatment can reduce the content of mineral elements in dry red wine, in which the content of Fe and Cu elements affect the taste and color of dry red wine, and the content of heavy metal elements affects the quality of dry red wine. Therefore, the clarification material of dry red wine should not only remove harmful metal elements but also retain nutritional elements as much as possible.