Chemical and physical parameters in recycling organic wastes for mushroom production

Levanon, Dan; Danai, Ofer; Masaphy, Segula

doi:10.1016/0269-7483(88)90140-1

Cited by 30 publications

(9 citation statements)

References 3 publications

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“…It has recently been shown that a mixture of cotton and wheat straws (CWS) is a suitable substrate for cultivation of Pleurotus spp. as an edible fungus (Levanon et al 1988), and for the subsequent utilization of these straws as an animal feed (Danai et al 1989). The decomposition of the lignocellulosic material is dependent on the degree of exocellular lignocellulolytic activity, which enables the mycelium to decompose and metabolize the heterogeneous complex of the three components of which lignocellulose is composed: lignin, cellulose and hemicellulose (Kirk 1988).…”

Section: Introductionmentioning

confidence: 99%

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The effect of lignocellulose on lignocellulolytic activity of Pleurotus pulmonarius in submerged culture

Masaphy

Levanon

1992

Appl Microbiol Biotechnol

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The possible effects of lignocellulose substrate on lignocellulolytic activity of the fungus Pleurotus pulmonarius was studied in submerged culture. This study included fungal growth rates, nitrogen and carbon consumption, and enzymatic activity rates, with and without added cotton-wheat straw (CWS) mixtures. Addition of CWS to the media caused increased consumption of glucose and NH~-by the fungal mycelium, induced carboxymethylcellulase (CMC-ase), increased poly-B decolourization, and enhanced the activity of laccase tenfold, while fl-glucosidase activity was also enhanced: its first peak was higher and second peak earlier. Lignin peroxidase, however, was not detected. These results give some indication that the lignocellulolytic activity of P. pulmonarius in liquid culture is enhanced by the presence of lignocellulosic substrates such as CWS.

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Section: Introductionmentioning

confidence: 99%

“…The study of submerged culture of Pleurotus is important for the production of fungal biomass for the food industry (Levanon et al 1988). The use of submerged culture has advantages over solid state culture in the study of the effect of substrates on exocellular activity, because enzymes are more easily detected.…”

Section: Introductionmentioning

confidence: 99%

The effect of lignocellulose on lignocellulolytic activity of Pleurotus pulmonarius in submerged culture

Masaphy

Levanon

1992

Appl Microbiol Biotechnol

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“…The substrate is rapidly overgrown by molds, resulting in spoilage and aerobic degradation. The anaerobic preservation of cotton stalks and the production of silage has been studied by Silanikove & Levanon (1986), Levanon et al (1988) and Danai et al (1989). Cotton stalks were harvested and chopped into 2-3 cm particles with a forage harvester originally designed to cut corn.…”

Section: Utilization Of Cotton Stalks As a Substrate For Pleurotus Fementioning

confidence: 99%

“…The material was taken to a concrete silo with a storage capacity of 450 tons, pressed with a heavy tractor, and then covered with black plastic sheets. After one month of storage, the pH of the preserved cotton stalks stabilized at 5.5 and the material was successfully utilized for commercial Pleu-rotus cultivation, up to nine months after harvest (Danai et al 1989;Levanon et al 1988).…”

Section: Utilization Of Cotton Stalks As a Substrate For Pleurotus Fementioning

confidence: 99%

Utilization of lignocellulosic waste by the edible mushroom, Pleurotus

Hadar¹,

Kerem²,

Gorodecki³

et al. 1992

Biodegradation

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Lignocellulosic waste represents huge amounts of unutilized renewable resource. The use of the polysaccharides in the lignocellulosic complex is limited due to their high lignin content. White rot fungi are capable of selectively degrading lignin, thereby upgrading it. The focus of this article is on the potential utilization of edible mushrooms of the genus Pleurotus, via solid state fermentation, using cotton plant stalks as a substrate. This material poses agrotechnical problems since the stalks have a fibrous structure similar to that of hardwood. Potential uses for this material are as a fuel in rural areas, a substrate for mushrooms, an animal feed and substrate for paper making. In this study, degradation of cotton stalks by Pleurotus is described using chemical analyses and scanning electron microscopy. During four weeks of solid state fermentation, lignin content significantly decreased and in vitro digestibility was increased. The fermentation product was consumed by ruminants at a level of up to 40% of their diet.

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“…Recently, SMC has been used as a soil amendment, a good fertilizer for other crops, vegetables and flowers. The use of chemical parameters to control the composting process and assure its quality has been demonstrated in the case of SMC [10]. Because the compost techniques time-consuming and laborious, rapid composting with microorganism inoculants, which can save time and reduce costs, is more popular.…”

Section: Introductionmentioning

confidence: 99%

Maturity Evaluation of Spent Mushroom Compost

Luan

Sun

et al. 2010

2010 4th International Conference on Bioinformatics and Biomedical Engineering

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Maturity of compost is an important practical factor in agricultural and horticulture production. This study was conducted to perform maturity assessment for spent mushroom compost (SMC). Compost maturity were evaluated using standard chemical analyses (pH, EC, CEC, total C and N content, C/N ratio, NH 4 + -N, NO 3 --N). Subsequently, potential phytotoxicity from SMC was assessed by germination bioassay using Lepidium sativum L. (cress). SMC samples were collected periodically during a 28-d rapid composting period from a single windrow. Following composting time, the pH and EC values had a tendency to increase, and in the end, the two values maintained constant. The increasing continuously CEC did not appear to be a more sensitive indicator. Although total C content (TC) and total N content (TN) were of limited value in assessing compost maturity, C/N ratio decreased significantly. NH 4 + -N declined within the first 14 days of composting, while NO 3 --N did not increase until 14+ days. According to seed germination index (GI), when composting time was prolonged, the toxicity of SMC had a tendency to decrease. Results from the experiments indicate that 21 days after rapid composting, SMC is considered to be mature. It is therefore concluded that pH, EC and GI have potential as useful indicators for SMC maturity evaluation.

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Chemical and physical parameters in recycling organic wastes for mushroom production

Cited by 30 publications

References 3 publications

The effect of lignocellulose on lignocellulolytic activity of Pleurotus pulmonarius in submerged culture

The effect of lignocellulose on lignocellulolytic activity of Pleurotus pulmonarius in submerged culture

Utilization of lignocellulosic waste by the edible mushroom, Pleurotus

Maturity Evaluation of Spent Mushroom Compost

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