西华大学学报（自然科学版）2026，Vol.45Issue(2)：55-63,9.DOI:10.12198/j.issn.1673-159X.5972
海拔梯度对皱皮柑营养品质及理化性质的影响
Effects of Altitudinal Gradient on Nutritional Quality and Physicochemical Properties of Wrinkled Skin Citrus
摘要
Abstract
The wrinkled skin citrus in Muli County,Liangshan Yi Autonomous Prefecture,Sichuan Province was taken as the research object.The multiple key indicators were measured,such as soluble solids content,pH value,vitamin C content,total acid content,total flavonoids content and mineral content of the wrinkled skin citrus at altitudes of 1 300,1 590 and 1 900 m above sea level.Combination correlation analysis and principal component analysis were carried out.The intrinsic connections and dominant factors among various indicators were revealed.The effects of different altitude gradients on the nutritional quality and physicochemical properties of wrinkled skin citrus were explored.The results show that regarding physicochemical properties,the soluble solid content peaks at 9.27%at an altitude of 1 590 m.The pH value is the lowest at 1 300 m(3.66).The vitamin C content reaches its peak at an altitude of 1 900 m(26.44 mg/100g).The total acid content is the highest at the 1 300 m(0.61%).The total flavonoid content is the highest at 1 300 m(11.12mg/g).Among the four mineral elements(Ca,Fe,Mg,Zn),calcium content is most significantly affected by the altitudinal gradient,reaching 101.43 mg/kg at the 1 900 m.Correlation analysis indicates the relationships between mineral elements and basic nutritional content.PCA reveals that total acid,total flavonoids,magnesium(Mg),and iron(Fe)are the key indicators influencing the quality of Muli wrinkled skin citrus.The results provide a scientific basis for the subsequent grading of wrinkled skin citrus raw materials,the target utilization of its functional components,and the optimization of high-alti-tude storage techniques.This study holds significant implications for promoting the upgrading of character-istic industrie in ethnic regions,contributing to rural revitalization and regional coordinated development.关键词
皱皮柑/海拔梯度/营养指标/理化性质/相关性分析/主成分分析Key words
wrinkled skin citrus/altitude gradient/nutritional indicators/physicochemical properties/correlation analysis/principal component analysis分类
轻工纺织引用本文复制引用
范婷,张旭东,周海波,贾刚,洪婉月,何露萍,魏春梅..海拔梯度对皱皮柑营养品质及理化性质的影响[J].西华大学学报（自然科学版）,2026,45(2):55-63,9.基金项目
四川省科技计划项目(2023YFN0096) （2023YFN0096）
西华杯大学生创新创业项目(xhb2025137). （xhb2025137）
