Developmental differences in antioxidant compounds and systems in normal and small-phenotype fruit of 'Hass' avocado (Persea americana Mill.)
文献类型： 外文期刊
作者： Wang, Meng 1 ; Zheng, Yusheng 1 ; Khuong, Toan 1 ; Lovatt, Carol J. 1 ;
作者机构： 1.Univ Calif Riverside, Dept Bot & Plant Sci 072, Riverside, CA 92521 USA
2.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Room 701,Block A,Beijing Agr Bldg, Beijing 100097, Peoples R China
关键词： Avocado small fruit variant;Determinate floral shoots;Health benefits;Indeterminate floral shoots
期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）
ISSN：
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收录情况： SCI
摘要： Antioxidant compounds and reactive oxygen-scavenging systems were investigated in 'Hass' avocado fruit set by determinate (DFS) and indeterminate floral shoots (IFS). During early development, DFS produced the largest fruit, IFS the smallest. Normal-phenotype (large) fruit (NPF) from DFS and IFS were faster growing, greater in length, diameter and weight and contained more protein than small-phenotype fruit (SPF) from DFS and IFS, resulting in SPF having greater ascorbic acid and total phenol concentrations and antioxidant capacity per g fresh weight. In contrast, NPF had greater catalase, ascorbate peroxidase, and glutathione reductase activities per g fresh weight than SPF on a greater number of sample dates; SPF had greater superoxide dismutase activity. Per mg protein, ascorbic acid and phenol concentrations, antioxidant capacity, peroxidase, polyphenol oxidase, catalase and ascorbate peroxidase activities were greater in SPF than NPF on more dates and at maturity. Thus, SPF would be a healthier food choice due to their greater antioxidant compounds and capacity compared to NPF. (C) 2016 Elsevier B.V. All rights reserved.
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