College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China.
FAFU-UCR Joint Center for Horticultural Plant Biology and Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China.
J Food Sci. 2023 Aug;88(8):3357-3372. doi: 10.1111/1750-3841.16701. Epub 2023 Jul 17.
The nutritional and volatile profiles of pulp and flavedo samples from four distinct local pummelo landraces ("Siji," "Pingshan," "Wendan," and "Guanxi") cultivated in Fujian province of China were investigated. "Guanxi" pummelo exhibited relatively high contents of vitamin C (42.01 mg/100 mL) and phenols (360.61 mg/L) and displayed a robust antioxidant capacity (41.15 mg/100 mL). Conversely, the red pulp from "Pingshan" demonstrated relatively high values of carotenoids (55.96 µg/g) and flavonoids (79.79 mg/L). Considerable differences were observed in volatile compositions between the two fruit tissues and among the four genotypes. A total of 166 and 255 volatile compounds were detected in the pulp and flavedo samples, respectively. Notably, limonene and β-myrcene were identified as the principal volatile compounds in flavedo, whereas hexanal was highly abundant in the pulp of "Siji," "Pingshan," and "Guanxi." "Wendan" displayed distinct separation from the other three pummelo cultivars in principal component analysis based on the pulp volatile compositions. This distinction was attributed to the higher number and content of volatile compounds in "Wendan" pulp, particularly the remarkable enrichment of β-myrcene. The newly characterized pummelo landraces and genotype/tissue-dependent variations in volatiles provide essential information for the genetic improvement of pummelo aroma, as well as for fruit processing and utilization.
本研究调查了中国福建省四个不同本地柚子品种（“四季”、“坪山”、“文旦”和“官溪”）的囊瓣和外果皮样品的营养成分和挥发性成分。“官溪”柚子的维生素 C（42.01mg/100mL）和酚类物质（360.61mg/L）含量相对较高，具有较强的抗氧化能力（41.15mg/100mL）。相比之下，“坪山”红囊瓣的类胡萝卜素（55.96µg/g）和类黄酮（79.79mg/L）含量较高。两个果实组织和四个品种之间的挥发性成分存在显著差异。在囊瓣和外果皮样品中分别检测到了 166 和 255 种挥发性化合物。值得注意的是，柠檬烯和β-月桂烯被鉴定为外果皮中的主要挥发性化合物，而己醛在“四季”、“坪山”和“官溪”的囊瓣中含量较高。“文旦”在基于囊瓣挥发性成分的主成分分析中与其他三个柚子品种明显分离。这种分离归因于“文旦”囊瓣中挥发性化合物数量和含量的增加，特别是β-月桂烯的显著富集。新鉴定的柚子地方品种和组织/基因型的挥发性差异为柚子香气的遗传改良以及果实加工和利用提供了重要信息。
