Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (8): 1638-1644.DOI: 10.3969/j.issn.1000-2561.2019.08.027

• Agricultural Product Processing, Preservation, Storage, Analysis and Detection • Previous Articles     Next Articles

Evaluation of Wax Gourd Wine Based on Principal Components and Cluster Analysis

XIN Ming1,2,LI Changbao1,2,*(),SUN Jian1,2,*(),ZHOU Zhugui1,TANG Yayuan1,LI Li1,HE Xuemei1,LI Jiemin1,LIU Guoming1   

  1. 1. Agro-food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, Guangxi 530007, China
    2. Guangxi Key Laboratory of Fruits and Vegetables Storage-processing Technology, Nanning, Guangxi 530007, China
  • Received:2018-08-08 Revised:2019-03-07 Online:2019-08-25 Published:2019-08-20
  • Contact: LI Changbao,SUN Jian


Sixteen indexes of wax gourd wines made from 11 yeasts, including physicochemicals, nutrients and antioxidation capabilities were determined in the study. The qualities of the wax gourd wines were evaluated by principal component analysis (PCA) and cluster analysis (CA). The results of PCA showed that the first five components represented 89.188% of the total variability on the base of the total variance explained and screen plot of principal component analysis. The hydroxyl radicals (·OH) scavenging capacity, superoxide radicals contents scavenging capacities, turbidity value, clarity, tonality values, soluble sugars, soluble reducing sugars, alcohol degrees, and contents of total soluble solids (SSC) were the main parameters for evaluating the quality of wax gourd wines. On the basis of composite score ranking, yeasts numbered BV818 and F45 were proposed. Wax gourd wines made from the 11 yeasts were classified into three main groups by CA through measured parameters, which was consistent with PCA results. This research is useful to select appropriate yeasts and processing wax gourd wines.

Key words: wax gourd wine, quality, principal component analysis, cluster analysis, evaluation

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