摘要
该研究通过紫外分光光度法和原子吸收分光光度法测定了莼菜4大产区商品成分种类及质量分数,并进行了初步分析与比较.结果表明:莼菜中不仅含有丰富的可溶性糖,较高比例的多酚和少量的蛋白质;还含有大量的K,Ca,Na,Mg,Zn,Fe元素和极少量的Cu,Se,Pb,Mn元素.其中浙江产区总粗糖质量分数最高,四川产区总酚、蛋白质质量分数最高,K元素质量分数从大到小依次为重庆、湖北、四川、浙江,Na元素质量分数从大到小依次为重庆、四川、浙江、湖北,Mg,Ca元素质量分数从大到小依次为湖北、四川、重庆、浙江,Zn元素质量分数从大到小依次为四川、重庆、浙江、湖北,Fe元素质量分数从大到小依次为湖北、重庆、四川、浙江,Cu,Se,Pb,Mn质量分数差异不大,比较分析看出四川产区的莼菜综合情况最佳.通过该研究不仅能够了解我国主产区莼菜组分差异,为进一步研究产区地理环境和莼菜生长状况、建立莼菜品质评价体系提供理论依据,同时也为消费者提供了一定的参考价值,有利于促进莼菜深加工产品的开发利用,推动莼菜产业及市场经济的发展.
Ultraviolet spectrophotometry and atomic absorption spectroscopy were employed to determine the commercially valuable components and their contents in water shield （Brasenia schreberi） collected from Si- chuan, Chongqing, Hubei and Zhejiang, and the resulting data was analyzed and compared, so as to understand the difference in the nutritional components of the vegetable in different regions, thus providing a theo- retical foundation for further research of its geographical growth environment and for the establishment of a quality evaluation system for it and promotion of its cultivation and deep processing. The result indicated that B. schreberi contained not only rich polysaccharides, abundant polyphenols and a little protein, but also plen- tiful K, Ca, Na, Mg, Zn and Fe and very little Cu, Se, Pb and Mn. In comparison, water shield from Zhe-jiang had the highest content of total sugar. The highest polyphenols and protein were detected in the samples from Siehuan. The content of K was found in the order of Chongqing〉 Hubei〉Sichuan〉Zhejiang. Na was in the order of Chongqing〉Sichuan〉Zhejiang〉Hubei. Mg and Ca were in the order of Hubei〉Sichuan〉Chongqing〉Zhejiang. Zn content was in the order of Siehuan〉 Chongqing〉Zhejiang〉 H ubei. Fe was in the order of Hubei〉Chongqing〉Sichuan〉Zhejiang. No great difference was observed in the contents of Cu, Se, Pb and Mn between different origin regions. Therefore, B. schreberi produced in Sichuan proved to be the best in quality.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第5期76-82,共7页
Journal of Southwest University(Natural Science Edition)
基金
重庆市自然科学基金(CSTC2013JCYJA8002)
西南大学科技创新基金(SZ201306)
西南大学科技创新基金(SZ201503)
关键词
莼菜
成分
提取分离
检测
water shield （Brasenia schreberi J. F. Gruel. ）
composition
extraction and separation
deter- mine
