Formulations of Entomopathogens as Bioinsecticides

Behle, Robert W.; Birthisel, Tim

doi:10.1016/b978-0-12-391453-8.00014-5

Cited by 24 publications

(30 citation statements)

References 99 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Natural ingredients are often used in formulations in order to maintain the environmentally "green" concept associated with biopesticides. Polymers are a usual material for pelletisation of EPNs and often include natural carbohydrate and/or protein polymers such as starch, sodium alginate, acacia gum, lignin and gelling agents amongst others [6,8,9].…”

Section: Problem Statement Of Moisture Evaporation From Granular Biopmentioning

confidence: 99%

Moisture Evaporation from Granular Biopesticides Containing Quiescent Entomopathogenic Nematodes

Cortés-Martínez¹,

Ruiz-Vega²,

Martínez-Gutiérrez³

2017

Current Perspective to Predict Actual Evapotranspiration

View full text Add to dashboard Cite

The moisture evaporation process from granular biopesticides (GBs) containing entomopathogenic nematodes (EPNs) has influence in the shelf-life of these biological products, but the approach to design GBs with desired transport properties lacks of theoretical support to get closer in a better way to formulations design of long-term storage. In this chapter we review the state of art in theoretical studies about the physics of the moisture evaporation to elucidate what are the mechanisms of drying of GBs. We found that several external and internal factors influence the transport process of moisture exchange among others phenomenon that happened in a porous media such as GBs; consequently, complex and highly dynamic interactions between medium properties, transport processes, and boundary conditions result in a wide range of evaporation behaviors. The theory of drying process in two stages for porous materials with high moisture content seems to be a good starting point to explore further the drying of GBs at different scales and mechanistic and correlative models of evaporation are available to analyze the desiccation in different stages of the elaboration process, which is also of interest in the subject area of science and technology of the formulation of EPNs.

show abstract

Section: Problem Statement Of Moisture Evaporation From Granular Biopmentioning

confidence: 99%

Moisture Evaporation from Granular Biopesticides Containing Quiescent Entomopathogenic Nematodes

Cortés-Martínez¹,

Ruiz-Vega²,

Martínez-Gutiérrez³

2017

Current Perspective to Predict Actual Evapotranspiration

View full text Add to dashboard Cite

show abstract

“…The bacteria produced from fermentation are concentrated via centrifuging, mixed with aqueous dispersing agents, and then dried to form powders (Behle and Birthisel 2013). Spray drying is the commonly method for drying Bt during the formulation process.…”

Section: Mass Production and Formulationmentioning

confidence: 99%

Sustainable Horticultural Systems

Nandwani¹

2014

Sustainable Development and Biodiversity

View full text Add to dashboard Cite

This book series provides complete, comprehensive and broad subject based reviews about existing biodiversity of different habitats and conservation strategies in the framework of different technologies, ecosystem diversity, and genetic diversity. The ways by which these resources are used with sustainable management and replenishment are also dealt with. The topics of interest include but are not restricted only to sustainable development of various ecosystems and conservation of hotspots, traditional methods and role of local people, threatened and endangered species, global climate change and effect on biodiversity, invasive species, impact of various activities on biodiversity, biodiversity conservation in sustaining livelihoods and reducing poverty, and technologies available and required. The books in this series will be useful to botanists, environmentalists, marine biologists, policy makers, conservationists, and NGOs working for environment protection.More information about this series at

show abstract

“…Three 94 days after onset of emergence from the insect cadaver, the IJ's were collected and concentrated in 95 double distilled water to maintain sterility and avoid damaging the nematodes during storage at 96 10 °C before pelletisation. The IJ's suspension was removed from refrigeration after 3 days and 97 acclimated at 21-23 °C for 24 h before being pelleted (Chen & Glazer, 2005 (Silver et al, 1995;Behle & Birthisel, 2014). In DE, the amorphous silicon dioxide is 105 present in about 86.7% by weight (Korunic & Fields, 1995;Shah & Khan, 2014).…”

mentioning

confidence: 99%

Effect of moisture evaporation from diatomaceous earth pellets on storage stability ofSteinernema glaseri

Cortés-Martínez

Ruiz-Vega

Matadamas-Ortiz

et al. 2016

Biocontrol Science and Technology

View full text Add to dashboard Cite

A c c e p t e d M a n u s c r i p t 2 Induction of anhydrobiosis and storage stability of entomopathogenic nematodes are influenced by moisture availability. Decreasing moisture content in diatomaceous earth pellets containing Steinernema glaseri NJ-43 strain and its effect on survival time and infectivity of the nematode was determined. Pelletisation was performed in a vortex mixer, using diatomaceous earth Celite ® 209 as desiccant material. Pellets were stored at room temperature (23±2 °C) and high relative humidity (96-100%). Nematode survival and infectivity against last instar greater wax moth, Galleria mellonella, were tested daily. Initial average and average equilibrium moisture content in pellets were 66.7% and 13.6%, respectively, and the IJ's mean survival time was 8.8 days. A moisture transfer model based on diffusion and evaporation was evaluated to predict moisture fluctuations within the pellets. We concluded that 84% of variation in S. glaseri infectivity on G. mellonella larvae was explained by the survival of the nematode whereas 52% of variation in S. glaseri survival was explained by the loss of moisture from the pellets. The moisture transfer model achieved 78% reliability in predicting moisture content and fluctuations. Therefore, the mechanisms of moisture diffusion and evaporation from the surface to the surrounding atmosphere contribute significantly to moisture loss from the pellets.

show abstract

Formulations of Entomopathogens as Bioinsecticides

Cited by 24 publications

References 99 publications

Moisture Evaporation from Granular Biopesticides Containing Quiescent Entomopathogenic Nematodes

Moisture Evaporation from Granular Biopesticides Containing Quiescent Entomopathogenic Nematodes

Sustainable Horticultural Systems

Effect of moisture evaporation from diatomaceous earth pellets on storage stability ofSteinernema glaseri

Contact Info

Product

Resources

About