Abstract
ABSTRACT Articles on the applicability of briquetting to the production of mushrooms are rare. Therefore, this research provides the scientific community and, mainly, producers, unpublished technical information regarding the productive yield of oyster mushroom cultivated in sugarcane bagasse briquettes supplemented with bioproducts of cereals. In 30 days of axenic cultivation, 6 tons-force briquettes with 80% humidity resulted in higher productivity (30.4%), and generated the lowest physical volume of exhausted compound (44.8%), thus, overcoming the technical performance of the other briquetting matrices tested, and even of methods traditionally used for the preparation of substrate for P. ostreatus cultivation on a commercial scale. The conclusion is, therefore, that the axenic cultivation of P. ostreatus var. Florida in sugarcane bagasse briquettes, supplemented with bioproducts of cereals, has technically qualified as an original and efficient method for the production of high biological value protein by the recycling of agricultural residues and can therefore guarantee multiple economic benefits to the agribusiness of the oyster mushroom, in addition to allowing reduction of environmental impacts by the restricted generation of exhausted compound in the post-harvest stage.
Highlights
In Brazil, an international reference in technology for sugar and bioethanol industrialization, a considerable physical volume of sugarcane bagasse is annually generated as a co-product by the sugar-energy sector; if it is disposed incorrectly to the environment, this generates irreparable adverse effects on native fauna and flora
Shimeji or hiratake, P. ostreatus qualifies as an excellent source of high biological value proteins, essential amino acids, vitamin D, macro and micronutrients, and carbohydrates, in addition to possessing low cholesterol
It is reasonable to infer that oyster mushroom growth in briquettes derived from agricultural residues is a complex biological phenomenon that only the causes of variation adopted in this study were not sufficient to fully explain it
Summary
In Brazil, an international reference in technology for sugar and bioethanol industrialization, a considerable physical volume of sugarcane bagasse is annually generated as a co-product by the sugar-energy sector; if it is disposed incorrectly to the environment, this generates irreparable adverse effects on native fauna and flora Researches emphasize that this agricultural residue enables sustainable applications such as soil conditioner and cultivation substrate for edible mushrooms (Shu et al, 2015; Wang et al, 2017). The enzymatic complex of P. ostreatus is an excellent degrader of complex carbohydrates such as cellulose, hemicellulose and lignin, it is possible that there is unproductivity in lignocellulosic substrates, if these are nutritionally inappropriate For this reason, experts recommend supplementing them with rice, wheat and corn bran, bean leaves, or any other additional source capable of balancing the carbon/nitrogen ratio (C/N) (Naraian et al, 2016, Vieira & Andrade, 2016; Higgins et al, 2017)
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