Effect of gamma irradiation on the nutritional quality of Agaricus bisporus strains cultivated in different composts

Abstract

The effect of irradiation doses (0, 125, 250 and 500 Gy) on the nutritional quality of A. bisporus mushrooms (strains ABI-07/06, ABI-05/03 and PB-1) cultivated in composts based on oat straw (Avena sativa) and brachiaria (Brachiaria sp.) was evaluated. The experimental design was 4 x 3 x 2 factorial scheme (irradiation doses x strains x composts), with 24 treatments, consisting of two repetitions each, totaling 48 experimental units (samples of mushrooms). The samples were irradiated in Cobalt-60 irradiator, model Gammacell 220 kGy, with dose rate of 0.740 kGy h -1 , according to the treatments proposed. Subsequently, the control (unirradiated) and the other treatments were maintained at 4±1°C and 90% RH in a climatic chamber for carrying out the chemical analysis of the mushrooms on the 1 st and 14 th day of storage. It was found that all A. bisporus strains evaluated were food with excellent nutritional value, because they presented high protein and fiber contents and low ethereal extract content; the chemical characterization of the mushrooms was influenced by the compost type in which they were cultivated; gamma irradiation influenced the chemical composition of mushrooms.

A Review: Bacterial Diversity, Physicochemical Factors and Quality of Compost for White Button Mushroom Cultivation

“…According to Singh and Jha, the four phases of composting include: [1]. Mesophilic phase; [2]. Thermophilic phase; [3].…”

“…The nutritional value of edible mushroom and the bioactive compounds they contain, make mushrooms a healthy food (Andrade et al, 2014). Medicinal significance and dietary nature of white button mushroom is well documented (Keleş et al, 2011;Changizi et al, 2012;Muszynska et al, 2017, Verma et al, 2013.…”

Effects of gamma irradiation on tropomyosin allergen, proximate composition and mineral elements in giant freshwater prawn (Macrobrachium rosenbergii)

“…Some food constituents have been shown to be vulnerable to destruction by ionizing radiation. Andrade et al (2014) demonstrated that food composition of mushrooms was affected by gamma irradiation, in particular the dose of 500 Gy, which granted to highest average of fiber and crude protein in the mushrooms. Similarly, Bamidele and Akanbi (2013) reported that gamma irradiation has significant effect on the amino acids profile, but no significant effect on minerals and vitamins content of the pigeon pea flour.…”