关键词: 黑木耳, 营养品质评价, 主成分分析, 聚类分析

Abstract: In order to investigate the nutrition quality of Auricularia auricular-judae from different origin regions in Heilongjiang province, taking 8 Auricularia auricular-judae from different regions as tested material, and ash, protein, fat, polysaccharide, crude fibre, total contents of amino acid as evaluation indexes for nutrient quality, this paper carried out eveluation and analysis on the nutrition quality of Auricularia auricular-judae on the base of principal component analysis by fuzzing mathematics and clustering methodology. The results of fuzzing mathematics analysis showed that protein and crude fibre could be used as indexes for evaluating Auricularia auricular-judae quality. The good and bad quality order of Auricularia auricular-judae from different regions was Changbaishan>Dongning>Yichun>Mudanjiang>Hegang>Anda>Shangzhi>Longjiang. Clustering analysis results showed that the nutrient quality of Changbaishan and Dongning were the best classified as the first class. Their comprehensive evaluation value were 0.941 and 0.756, respectively. Those from Yichun, Mudanjiang, Hegang, Anda, Shangzhi were classified as medium nutrition quality, with comprehensive evaluation value from 0.156~0.462. That from Longjiang was alone classified as class with the worst nutrition quality, its comprehensive evaluation value was 0.151. These results provided technical references for analyzing nutrition quality of Auricularia auricular-judae.

Key words: Auricularia auricular-judae, nutrition quality evaluation, principal component analysis, clustering analysis