Journal Of Applied Horticulture ISSN: 0972-1045


A.P. Silva, A. Santos, J. Cavalheiro, C. Ribeiro, F. Santos and B. Gon?alves

'CECEA - Centre for Agricultural Sciences and Engineering, University of Tras-os-Montes e Alto Douro, Apt. '0'3, 500'-80' Vila Real, Portugal, Department of Plant Science and Agricultural Engineering; CETAV - Centre for Technological, Environmental and Li

Key words: Crude fat, crude protein, free oc-amino acids, neutral detergent fibre, proximate analysis, starch

Journal of Applied Horticulture, 2007, volume 9, issue 2, pages 157-161.

Abstract: Chemical composition (crude protein, crude fat, starch, neutral detergent fibre - NDF and free a-amino acids) of six hazelnut cultivars (Butler, Ennis, Fertile de Coutard, Grossal, Merveille de Bollwiller and Segorbe) was investigated. Genotype significantly affected fruit nutritive value. Crude protein ranged from 12-17 g 100 g-1 dry weight (dw) in cultivar Ennis and Merveille de Bollwiller, respectively; crude fat was 50-62 g 100 g-1 dw in cvs. Fertile de Coutard and Butler; starch varied from 1.0 to 2.4 g 100 g-1 dw in cvs. Segorbe and Butler; and NDF was 8-14 g 100 g-1 dw in cvs. Merveille de Bollwiller and Ennis. Total free a-amino acids content ranged from 144 mg 100 g-1 dw (cv. Segorbe) to 413 mg 100 g-1 dw (cv. Butler). The essential amino acids content varied between 23 mg 100 g-1 dw (cv. Butler) to 55 mg 100 g-1 dw (cv. Merveille de Bollwiller). Alanine was the main amino acid found (62% of total amino acids) and methionine was the lowest (0.3%). Based on the available data on the phytochemical content of hazelnuts, including the data presented in this study, there is a high likelihood that this fruit will provide positive health benefits.

Journal of Applied Horticulture