USE OF LIQUORICE ROOT POWDER TO IMPROVE YIELD, STORAGE LIFE AND MEDICINAL PROPERTIES OF OYSTER MUSHROOM

M. Abdulhadi, Abdulilah

	USE OF LIQUORICE ROOT POWDER TO IMPROVE YIELD, STORAGE LIFE AND MEDICINAL PROPERTIES OF OYSTER MUSHROOM
The Iraqi Journal of Agricultural Science
Article 1, Volume 41, Issue 6, 2010, Pages 71-85
Author
Abdulilah M. Abdulhadi
Abstract
Four experiments were conducted in the cold storage unit in the Dept. of Hort. /College of Agric. / Univ. of Baghdad starting in Feb. 1 / 2009. The white strain spawn of oyster mushroom ( Pleurotus ostreatus ( Jaq: Fr ) ) was imported from Jordan. Plastic bags were filled with 1 kg of sterilized and moist wheat straw and 50g of mushroom spawn was added to each bag. The bags were transferred to the incubation room at 25 ± 2°C for one month, then to the growth room. Humidity was raised to 80-90 % and light to 400 lux. Liquorice ( Glycyrrhiza glabra ) root powder was added to the wheat straw before spawning and before extracting the water soluble substances in the following percentages : 0 or 5% or 10 % or 15 % , W / W. In the second experiment the water soluble substances were removed from liquorice root powder by boiling with water and squeezed by cloth bag. The remaning insoluble powder was dried and added to the straw before spawing in the same percentages used in the first experiment. The fruiting bodies of the oyster mushroom were dried and used to determine the kind and the concentration of the chemicals with the medicinal properties using HPLC. The results showed that total yield and fruiting body weight and the biological efficiency increased with the increase of the percentage of both kinds of liquorice root powder. The concentration of all the chemicals detected in the fruiting bodies were increased with the increase of both kind of the powder used. Using 15 % of the unextract powder icreased the concentration of gallic acid from 5.68 mg / g to 8.61 mg/g of dry matter, and increased of Lectin from 1.24 mg / g to 9.29 mg / g of dry matter, and of B-gluca from 11.39 mg / g to 26.93 mg / g of dry matter and increased statin from 2.10 mg / g to 9.78 mg / g of dry matter, and increased chitin from 2.71 mg / g to 10.42 mg / g of dry matter and increased ergothionine from 10.96 mg / g of dry matter to 30.23 mg / g of dry matter. Storage of the fruiting bodies three weeks at 2 ± 1°c reduced the concentration of all the chemicals significantly.

Statistics Article View: 126 PDF Download: 112