文献类型：期刊文献

英文题名：Kernel Nutrient Composition and Antioxidant Ability of Corylus spp. in China

作者：Jiang, Jiangzhao[1,2,3,4,5] Liang, Lisong[1,2,3,4] Ma, Qinghua[1,2,3,4] Zhao, Tiantian[1,2,3,4]

第一作者：Jiang, Jiangzhao

通信作者：Liang, LS[1];Liang, LS[2];Liang, LS[3];Liang, LS[4]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Beijing, Peoples R China;[2]State Key Lab Tree Genet & Breeding, Beijing, Peoples R China;[3]State Forestry & Grassland Adm, Hazeinut Engn & Tech Res Ctr, Beijing, Peoples R China;[4]Natl Innovat Alliance Hazelnut Ind, Beijing, Peoples R China;[5]Nanchong Vocat & Tech Coll, Nanchong, Peoples R China

年份：2021

卷号：12

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;Scopus(收录号：2-s2.0-85109370458);WOS:【SCI-EXPANDED(收录号:WOS:000670253200001)】；

基金：This work was supported by the Special Investigation on Basic Resources of Science and Technology (Grant No. 2019FY100801_03), Research Institute of Forestry, Chinese Academy of Forestry, and the Basal Research Special Fund of the Key Laboratory of Fruit Quality Control and Processing Technology of Nanchong City (NCKL202003).

语种：英文

外文关键词：antioxidant; hazelnut in China; fat acid; amino acids; sugar; tocopherol; total phenol; total flavonoid

摘要：Hazelnut (Corylus) is an important woody oil tree species in economic forests. China, as one of the original countries of native Corylus species, had 8 species and 2 varieties. However, little information is available on the hazelnut nutritional quality of these Chinese Corylus species. In this study, four main wild Corylus species (C. heterophylla Fisch., C. mandshurica Maxim., C. kweichowensis Hu., and C. yunnanensis Franch.) originating in China and one main cultivar of hybrid hazelnut (Corylus heterophylla Fisch. x C. avellana L.) cv. 'Dawei' from China were used to analyze the basic nutritional composition (content of oil, fatty acid, protein, saccharide, aminao acid, vitamin C, tocopherol, total phenols, and total flavonoids) and antioxidant ability. The results showed that oil content ranged from 52.97 to 60.88 g/100 g DW and highly unsaturated fatty acid (UFA) content was over 91%. Oleic was the most dominant UFA in these hazelnut kernels, and the relative content was ranging from 71.32 to 85.19%. Compared with other four hazelnut kernels, C. heterophylla Fisch. was the lowest oil content of hazelnut with lower oleic acid content and higher linoleic acid content, obviously. The total protein content ranged from 13.15 to 18.35 g/100 g DW, and all amino acids were detected as hydrate amino acids, but Tryptophan, an essential amino acid, was not detected as free amino acid in these hazelnut kernels. Kernel of C. heterophylla Fisch. was with the highest content of protein and amino acid. Saccharose was the most essential and abundant disaccharide in the hazelnut kernels. C. mandshurica Maxim. was the highest saccharide content among these hazelnut kernels. alpha-tocopherol was the main type of tocopherol found in the hazelnut kernels. Wild hazelnut kernels generally had higher bioactivity substance content (vitamin C, total tocopherol, total phenol and total flavonoid) and antioxidant capacity. Compared to the four wild hazelnut kernels, the hybrid hazelnut cv. 'Dawei' had higher content of oil, oleic acid, alpha-tocopherol and sugar. Overall, there were great differences in the nutritional composition of different hazelnut species. Wild species are a good source of breeding materials because of their own characteristics in nutrition composition, and the hybrid hazelnut cv. 'Dawei' with good quality has the value of commercial promotion.