Bibliographic Details
| Title: |
Heat treatment of wheat straw by immersion in hot water decreases mushroom yield in Pleurotus ostreatus. |
| Alternate Title: |
La inmersión en agua caliente de la paja del trigo como sustrato para la producción de Pleurotus ostreatus disminuye la producción de esta seta. |
| Authors: |
Mejía, Santiago Jaramillo, Alberto, Edgardo1 ealberto@intech.gov.ar |
| Source: |
Revista Iberoamericana de Micologia. 4/30/2013, Vol. 30 Issue 2, p125-129. 5p. |
| Subjects: |
HEAT treatment, WHEAT straw, HEAT of wetting, MUSHROOMS, PLEUROTUS ostreatus, MYCELIUM |
| Abstract (English): |
Background: The oyster mushroom, Pleurotus ostreatus, is cultivated worldwide. It is one of the most appreciated mushrooms due to its high nutritional value. Immersion of the substrate in hot water is one of the most popular and worldwide treatment used for mushroom farmers. It is cheap and easy to implement. Aims: To compare the yields obtained during mushroom production of P. ostreatus using different pretreatments (immersion in hot water, sterilization by steam and the use of fungicide) to determine if they influence mushroom crop. Methods: Four different treatments of substrate (wheat straw) were carried out: (i) immersion in hot water (IHW)\ (ii) steam sterilization; (iii) chemical; and (iv) untreated. The residual water from the 1HW treatment was used to evaluate the mycelium growth and the production of P. ostreatus. Results: Carbendazim treatment produced highest yields (BE: 106.93%) while IHW produced the lowest BE with 75.83%. Sugars, N, P, K and Ca were found in residual water of IHW treatment. The residual water increased the mycelium growth but did not increase yields. Conclusions: We have proved that IHW treatment of substrate reduced yields at least 20% when compared with other straw treatments such as steam, chemical or untreated wheat straw. Nutrients like sugars, proteins and minerals were found in the residual water extract which is the resultant water where the immersion treatment is carried out. The loss of these nutrients would be the cause of yield decrease. Alternative methods to the use of IHW as treatment of the substrate should be considered to reduce economical loss. [ABSTRACT FROM AUTHOR] |
| Abstract (Spanish): |
Fundamento: La seta de ostra, Pleurotus ostreatus, se cultiva en todo el mundo y es una de las especies más apreciadas debido a su alto valor nutricional. El método de inmersión del sustrato en agua caliente es uno de los más empleados en todo el mundo por los cultivadores. Su implementación es conveniente y sus costes son bajos. Es importante someter el sustrato a un tratamiento térmico que destruya semillas, insectos parásitos y hongos que podrían aparecer en el cultivo. Objetivos: Comparar la producción obtenida de P. ostreatus durante el cultivo usando diferentes métodos de tratamiento del sustrato: inmersión en agua caliente, esterilización con vapor y uso de un fungicida para determinar si influyen en la cosecha de la seta. Métodos: Se Ilevaron a cabo 4 tratamientos diferentes del sustrato (paja de trigo): a) inmersión en agua caliente; b) esterilización con vapor; c) químico, y d) sin tratamiento. El agua residual del tratamiento de inmersión en agua caliente se usó para evaluar el crecimiento del micelio y la producción de P. ostreatus. Resultados: El tratamiento con carbendacima dio lugar a la mayor producción (eficiencia biológica [EB]: 106,93%), mientras que, mediante inmersión en agua caliente, se obtuvo la más baja (EB: 75,83%). En el agua residual del método de inmersión en agua caliente se detectaron azúcares, N, P, K y Ca. El agua residual aumentó el crecimiento del micelio, pero no incrementó el rendimiento. [ABSTRACT FROM AUTHOR] |
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| Database: |
MedicLatina |
