tailieunhanh - Báo cáo khoa học " Chitin content of cultivated mushrooms Agaricus bisporus, Pleurotus ostreatus and Lentinula edodes Janos Vetter "

The chitin contents of pileus and stipes of fruit bodies of Agaricus bisporus, Pleurotus ostreatus and Lentinula edodes (shii take) were determined and compared. The fruit bodies of different, common varieties of the cultivated mushroom species were taken from Hungarian and German large-scale farming. The analytical procedure was carried out on the powder of cleaned, dried and milled pileus and stipes. The pileus of A. bisporus variety ‘K-23’ showed a significant decrease (p | Available online at ScienceDirect Food Chemistry 102 2007 6-9 Food Chemistry locate foodchem Chitin content of cultivated mushrooms Agaricus bisporus Pỉeurotus ostreatus and Lentinuỉa edodes Janos Vetter Department of Botany Facuỉty of Veterinary Science Szent Istvan University . Box 2 Rottenbiỉỉer 50 H-1400 Budapest Hungary Received 18 September 2005 received in revised form 27 December 2005 accepted 23 January 2006 Abstract The chitin contents of pileus and stipes of fruit bodies of Agaricus bisporus Pỉeurotus ostreatus and Lentinuỉa edodes shii take were determined and compared. The fruit bodies of different common varieties of the cultivated mushroom species were taken from Hungarian and German large-scale farming. The analytical procedure was carried out on the powder of cleaned dried and milled pileus and stipes. The pileus of A. bisporus variety K-23 showed a significant decrease p during the cultivation s flushes breaks 1-3 while the chitin level of stipes seemed to be constant. The other analysed A. bisporus varieties var. 158 K-7 Sylvan A-15 Sylvan 608 and Le Lion C-9 had practically the same chitin levels. This indicates that the chitin content is a stable characteristic of the species and there are no significant differences between the different varieties. The chitin levels of pileus and stipes were not significantly different for A. bisporus and but showed significant differences for P. ostreatus p and L. edodes p . In the case of the latter two species the pileus had the higher and the stipe the lower chitin content. The presented data confirm that a mushroom saprotrophic A. bisporus had higher chitin level than had the wood-rotting ones P. ostreatus L. edodes . 2006 Elsevier Ltd. All rights reserved. Keywords Chitin Fruit body Pileus Stipe Agaricus bisporus Pỉeurotus ostreatus Lentinuỉa edodes 1. Introduction The edible cultivated mushrooms have some valuable properties remarkable .