富士苹果冷藏期根皮苷含量与品质指标的相关性  

Correlation of Phloridzin Content with Quality Indicators during Cold Storage of ‘Fuji' Apples

作　　者：刘春利[1] 任亚梅[1] 张爽[1] 彭星星[1] 王涛[1] 任小林[2] 

机构地区：[1]西北农林科技大学食品科学与工程学院,陕西杨凌712100 [2]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《食品科学》2015年第18期242-246,共5页Food Science

基　　金：国家现代农业产业技术体系建设专项(Z225020701);陕西省农业科技创新与攻关项目(2015NY004)

摘　　要：为了探究品质指标是否可以预测根皮苷含量,以富士苹果为试材,测定冷藏180 d期间苹果果皮、果肉和籽粒中根皮苷含量及果实品质指标的变化趋势,应用相关和回归分析探索其关系。苹果根皮苷含量籽粒>果皮>果肉,整个贮藏期苹果果皮、果肉和籽粒根皮苷含量整体呈下降趋势。贮藏4个月内,苹果不同部位根皮苷含量均维持在较高水平,苹果果肉脆硬,风味越来越甜,食用品质较好。硬度越高,果皮和籽粒根皮苷含量越高;籽粒水分含量越高,根皮苷含量越低;可滴定酸含量越高,根皮苷含量越高;固酸比含量越高,果肉和籽粒根皮苷含量越低。根皮苷含量与相关品质指标存在6个显著的回归方程,拟合度较好。通过品质指标的测定可以预测苹果不同部位根皮苷的含量。The aim of this study was to evaluate the relationship between phloridzin content and quality indicators of apple fruit. During the 180-day storage of ‘Fuji＇ apples, the phloridzin content in different parts of the fruit（peel, pulp and seed） and quality indicators（hardness, water content, and soluble solid content（SSC）, titratable acidity（TA） and SSC/TA ratio） of apple flesh were determined. Correlation analysis and regression analysis were conducted between phloridzin content and the quality indicators. The phloridzin contents in different parts of apple fruit were in the decreasing order： seed peel pulp and showed downward trends with storage time. During the fourth month of storage, apple fruit exhibited high content of phloridzin and maintained an excellent eating quality with high hardness and sweet taste. The correlation analysis showed that there was a positive correlation between hardness and the phloridzin content of apple peel and seed as well as between TA and the phloridzin content of apple pulp, and a negative correlation between SSC/TA ratio and the phloridzin content of apple pulp and seed and between water content and phloridzin content of apple seed（P〈0.05 for all measures）. The regression analysis indicated that there existed six significant regression equations between phloridzin content and quality indicators with excellent goodness of fit. This study demonstrated that the phloridzin contents in different parts of apple fruit could be predicted by the quality indicators.

关 键 词：苹果 根皮苷 贮藏 品质指标 相关性 

分 类 号：S661.1[农业科学—果树学]