Evaluation of Zinc Concentrations in Fruit from Various Pear Strains and Cultivars in China for Establishing a Standard for Zinc-Enriched Pears
文献类型: 外文期刊
第一作者: Liu, Mengjiao
作者: Liu, Mengjiao;Ma, Zhengbo;Xu, Meng;Liu, Mengjiao;Zhou, Jingjie;Tang, Sheng;Wu, Lianghuan;Yu, Huili;Liu, Longfei;Fu, Guohai;Li, Yanqing
作者机构:
关键词: pear; fruit Zn concentration; sample preparation; quality standard; Zn-enriched cultivar
期刊名称:HORTICULTURAE ( 影响因子:3.1; 五年影响因子:3.4 )
ISSN:
年卷期: 2023 年 9 卷 10 期
页码:
收录情况: SCI
摘要: Zinc (Zn)-enriched pears, which are derived from genetically related cultivars or crops fortified using agronomic methods, have the potential to partly satisfy the human demand for Zn nutrition and diversify consumer choices. However, a standard for the Zn fortification level in pears is lacking, and the disparity in literature-reported fruit Zn concentrations can vary by substantial amounts. Before investigating the Zn concentrations in fruits of the main pear cultivars in China, common sample preparation methods were compared. Among the pre-treatment methods tested, the freeze-dry technique had a greater degree of discrete variation, whereas oven drying (fresh weight) was the optimal method for determining fruit Zn concentrations. Based on the optimal method, no significant distribution patterns of fruit Zn concentration were found among the regions and strains examined. The averaged pulp Zn concentration in all 26 cultivars was 0.72 mg kg-1, with the Hongxiangsu, Jinfeng, and 420 cultivars having the highest concentrations. Combined with the findings from our previous field experiments on Zn-fortified pears, a Zn concentration of >= 0.90 mg kg-1 is the suggested standard for pear enrichment. These results help us to better understand pear Zn nutrition levels and facilitate the marketisation of the fortified fruit.
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