Construction method of quantitative evaluation model for the maturity of Korla fragrant pear

作     者：Shihui Yu Yurong Tang Haipeng Lan Xiaolong Li Hong Zhang Yong Zeng Hao Niu Xiaozhen Jin Yang Liu 

作者机构：College of Mechanical and Electrical EngineeringTarim UniversityAlaer 843300XinjiangChina College of Mechanical and Electronic EngineeringShandong Agricultural UniversityTai’an271018ShandongChina Zibo Agricultural Machinery Service CenterZibo 255000ShandongChina 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2022年第15卷第4期

页      面：243-250页

核心收录：

学科分类：08[工学] 0828[工学-农业工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：The authors acknowledge that this work was financially supported by the Innovation Research Team Project of the Principal Fund of Tarim University(Grant No.TDZKCX202203) the University President Fund Project(Grant No.TDZKCQ201902) the Xinjiang Production and Construction Group Key Laboratory of Agricultural Products Processing in Xinjiang South(Grant No.AP1905) Innovation and Entrepreneurship Project of the Xinjiang Production and Construction Group Special Commissioner for Science and Technology(Grant No.2019CB037) the“Strong youth”Key Talents of Scientific and Technological Innovation(Grant No.2021CB039) The authors also acknowledge all persons who assisted in this writing. 

主　　题：Korla fragrant pear quantitative evaluation maturity principal component analysis accumulated temperature 

摘      要：The maturity variation laws of Korla fragrant pears were explored for a quantitative evaluation of harvest maturity to solve the reasonable matching between harvest maturity of Korla fragrant pears and market quality demands.Korla fragrant pears from different harvesting periods were chosen as the research objects.Some quality indexes were chosen as the evaluation indexes per industry standards,including hardness,soluble solid content(SSC),single-fruit weight,fruit longitudinal diameter,fruit equatorial diameter,pericarp color parameters(L*,a*,and b*),and titratable acid.Variation data of these quality indexes with accumulated temperature were collected.Scores of several quality indexes were gained through principal component analysis.A mathematical model of scores and accumulated temperatures was constructed.On this basis,a quantitative maturity model of Korla fragrant pears was constructed.Results demonstrate that SSC,single-fruit weight,fruit longitudinal diameter,fruit equatorial diameter,L*,a*,and b*are significantly and positively correlated with the accumulated temperature.Meanwhile,hardness and titratable acid showed significant negative correlations with the accumulated temperature.Relations between scores of principal components and accumulated temperature conform to the Sigmoidal model.The constructed quantitative maturity model of Korla fragrant pears can quantify the maturity of pears.Research conclusions can provide insight into the harvest periods,evaluate Korla fragrant pears’maturity,and lay a theoretical foundation for quantitative research on fruit maturity.