Design of an efficient fermentation process for the production of Metarhizium acridum blastospores

2016 ◽  
Vol 26 (12) ◽  
pp. 1652-1667 ◽  
Author(s):  
M. G. Téllez-Martínez ◽  
G. Alcalá-Gómez ◽  
H. Jiménez-Islas ◽  
J. L. Navarrete-Bolaños
Keyword(s):  
Fermentation Process ◽  
Metarhizium Acridum ◽  
Efficient Fermentation

scholarly journals Modelling of ergosterol production by S. cerevisiae in presence of n-dodecane as oxygen-vector

2021 ◽  
Vol 26 (2) ◽  
pp. 2464-2470
Author(s):  
ANCA-IRINA GALACTION ◽  
◽  
ALEXANDRA CRISTINA BLAGA ◽  
ALEXANDRA TUCALIUC ◽  
LENUŢA KLOETZER ◽  
...  
Keyword(s):  
Batch Fermentation ◽  
Fermentation Process ◽  
Biomass Concentration ◽  
Aeration Rate ◽  
Yeast Cells ◽  
Fed Batch ◽  
Volumetric Fraction ◽  
Fed Batch Fermentation ◽  
Oxygen Vector ◽  
Efficient Fermentation

The previous studies on ergosterol production by Saccharomyces cerevisiae in presence of n-dodecane as oxygen-vector have been continued by mathematical modelling the fermentation process. In this purpose, the most efficient fermentation regime has been considered, namely fed-batch fermentation, and was based on the influences of hydrocarbon volumetric fraction, biomass concentration, and aeration rate on the ergosterol content inside the yeast cells. The model describing the fermentation process has been established by means of the statistical analysis, using a factorial experiment of second order. The considered variables control the ergosterol production in a 94.4% extent, the biomass concentration exhibiting the most important influence.

scholarly journals Application and Future Prospective of Lactic Acid Bacteria as Natural Additives for Silage Production—A Review

2021 ◽  
Vol 11 (17) ◽  
pp. 8127
Author(s):  
Ilavenil Soundharrajan ◽  
Hyung Soo Park ◽  
Sathya Rengasamy ◽  
Ravikumar Sivanesan ◽  
Ki Choon Choi
Keyword(s):  
Lactic Acid ◽  
Fermentation Process ◽  
Animal Feed ◽  
Critical Role ◽  
Microbiological Quality ◽  
Starter Cultures ◽  
Biological Potential ◽  
Silage Production ◽  
Efficient Fermentation ◽  
Agriculture Systems

Ensiling is one of the essential processes to preserve fodder with high nutrients and microbiological quality. The forages before ensiling have a limited number of bacteria associated with the controlled fermentation process. Undesirable microbes can grow in silages when there is not efficient fermentation. Such kinds of microbes might cause pathogenic or toxic compounds that affect animal and human health. Therefore, it is necessary to inoculate potent starter cultures. Lactic acid bacteria’s (LABs) have been considered the most prominent microbial additives used to improve the quality of silage. Currently, LABs have been used in modern and sustainable agriculture systems due to their biological potential. Recently, many scientists have increased their focus on developing nutrient-rich animal feed from forages with LAB. This current review focuses on issues related to forage preservation in the form of silages, how undesirable microbes affect the fermentation process, the critical role of LAB in silage production, and the selection of potent LABs to effectively control unwanted microbial growth and promote those which favor animal growth.

Pengolahan Limbah Domba Menjadi Bokashi di Desa Arjowilangun, Kecamatan Kalipare Kabupaten Malang

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Moch Agus Choiron ◽  
Siti Azizah ◽  
Nafisah Arina Hidayati
Keyword(s):  
Waste Management ◽  
Organic Material ◽  
Fermentation Process ◽  
Agricultural Waste ◽  
Previous Discussion ◽  
Post Test ◽  
Village People ◽  
Pathogenic Microbes

Arjowilangun Village is a post-TKI village. People choose to become sheep farmers with less capital than being cattle farmers. Based on the previous discussion, waste management is required to ensure the sustainability of environment in Arjowilangun Village. Processing sheep and agricultural waste program is held by Doktor Mengabdi team. Farmers can learn how to make Bokashi from waste. The method used is composting aerobic or anaerobic starters for composting organic material. A decomposer as collection of several good microbes from fungi work to control pathogenic microbes assists the fermentation process. Based on the results of the pre-test and post-test during the training, it can be showed that understanding of the breeders' potential of the environment is increased.

Potential of Palm Oil Empty Fruit Bunch as Biogas Substrate

2019 ◽  
Vol 2 (1) ◽  
pp. 59-64
Author(s):  
Vincentius Vincentius ◽  
Evita H. Legowo ◽  
Irvan S. Kartawiria
Keyword(s):  
Palm Oil ◽  
Fermentation Process ◽  
Biogas Production ◽  
Wastewater Sludge ◽  
Empty Fruit Bunch ◽  
Alternative Source ◽  
The Earth ◽  
The One ◽  
Wet Fermentation ◽  
Water Ratio

Natural gas is a source of energy that comes from the earth which is depleting every day, an alternative source of energy is needed and one of the sources comes from biogas. There is an abundance of empty fruit bunch (EFB) that comes from palm oil plantation that can become a substrate for biogas production. A methodology of fermentation based on Verein Deutscher Ingenieure was used to utilize EFB as a substrate to produce biogas using biogas sludge and wastewater sludge as inoculum in wet fermentation process under mesophilic condition. Another optimization was done by adding a different water ratio to the inoculum mixture. In 20 days, an average of 6gr from 150gr of total EFB used in each sample was consumed by the microbes. The best result from 20 days of experiment with both biogas sludge and wastewater sludge as inoculum were the one added with 150gr of water that produced 2910ml and 2185ml of gas respectively. The highest CH 4 produced achieved from biogas sludge and wastewater sludge with an addition of 150gr of water to the inoculum were 27% and 22% CH 4 respectively. This shows that biogas sludge is better in term of volume of gas that is produced and CH percentage.

Susceptibilidad de estadios de Sphenarium purpurascens purpurascens (Orthoptera: Pyrgomorphidae) a una cepa comercial de Metarhizium acridum (Hypocreales: Clavicipitaceae) en Michoacán, México

2019 ◽  
Vol 45 (2) ◽  
pp. e7959
Author(s):  
Venecia Quesada-Béjar ◽  
Miguel B. Nájera-Rincón ◽  
Enrique Reyes-Novelo ◽  
Carlos E. González-Esquivel
Keyword(s):  
Post Mortem ◽  
Metarhizium Acridum

El objetivo de este estudio fue evaluar el desempeño de una cepa comercial del hongo entomopatógeno Metarhizium acridum en diferentes estadios del saltamonte plaga Sphenarium purpurascens purpurascens, así como su esporulación a través de bioensayos bajo condiciones de laboratorio, en Michoacán, México. Los estadios más susceptibles fueron las ninfas uno, dos y cuatro, su tiempo de supervivencia promedio fue menor de 6,91 días. El menos susceptible fue el adulto, con un tiempo de supervivencia de 8,36 días. Los estadios con mayor esporulación post mortem fueron ninfas uno, dos y tres. Se registró una asociación negativa moderada entre los estadios de S. p. purpurascens y la esporulación de M. acridum, en estadios avanzados (ninfa 4 y adulto), en los cuales la esporulación fue menor en comparación con los estadios inmaduros. Todos los estadios mostraron tasas de supervivencia por debajo del 5 %, por lo tanto M. acridum se considera una opción viable para controlar esta plaga en el campo.

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