Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (3): 534-547.DOI: 10.3969/j.issn.1004-1524.2022.03.14

• Horticultural Science • Previous Articles     Next Articles

Comprehensive evaluation of fruit quality and nutrition of six kumquat varieties

YANG Lei1(), HONG Lin1,*(), LIU Zhaojun2, YANG Haijian1, WANG Wu1   

  1. 1. Fruit Research Institute, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China
    2. Liangping District Agricultural Product Brand Development Center, Chongqing 405200, China
  • Received:2021-07-21 Online:2022-03-25 Published:2022-03-30
  • Contact: HONG Lin

Abstract:

To study the difference of fruit quality and nutrition of different kumquat varieties, 15 main quality indexes, 20 functional component indexes and 17 amino acid nutrition indexes of six kumquat varieties from National Fruit Germplasm (Chongqing) Citrus Nursery were determined as the research object, and comprehensive evaluation was made by combining principal component analysis and membership function method. The results showed that fruit essential quality of Fortunella obovata(Wenguangju) was much better, total flavonoids content of Fortunella classifolia(Huapi) was the highest, Fortunella obovata(Wenguangju) and Fortunella classifolia(Huapi) had high total phenolic acids content. both of Fortunella japonica(Luowen) and Fortunella classifolia(Rong’an) had higher total amino acid content. Efficacy, bitter and aromatic amino acid content of Fortunella classifolia(Huapi)was the highest, and sweet amino acid content of Fortunella classifolia(Rong’an) was the highest. Four principal components were extracted through the principal component analysis (PCA), and the contribution rate reached to 98.905%, then the membership function method was used to obtain comprehensive evaluation values of fruit quality and nutrition of six kumquat varieties, the final score ranking was: Fortunella obovata (Wenguangju)> Fortunella japonica(Ningbo)> Fortunella classifolia(Huapi)> Fortunella crassifolia(Wenzhou)> Fortunella margarita(Ningbo)> Fortunella classifolia(Rong’an). Above all, Fortunella obovata (Wenguangju) and Fortunella japonica(Ningbo) had high comprehensive quality and nutritional value. The result could provide new varieties choice for citrus industry development in Chongqing.

Key words: kumquat, quality, nutrition, principal component analysis, membership function method, comprehensive evaluation

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