|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 2 van 9 gevonden artikelen
| Titel: |
Evaluating conditions for producing spray-dried formulations of Anagrapha falcifera nucleopolyhedroviruses (AfMNPV) |
| Auteur: |
Behle, Robert W. Tamez-Guerra, Patricia McGuire, Michael R. |
| Verschenen in: |
Biocontrol science and technology |
| Paginering: | Jaargang 16 (2006) nr. 9 pagina's 941-952 |
| Jaar: |
2006-10-01 |
| Inhoud: |
We investigated how altering parameters during the production of spray-dried lignin formulations affected the insecticidal activity of a baculovirus (AfMNPV), which was originally isolated from celery looper, Anagrapha falcifera (Kirby). Exposure to high temperature, varied pH of the dryer feedstock, substitution of formulation ingredients, and different commercial production lots of virus were evaluated for their effect on the insecticidal activity of AfMNPV. Insecticidal activities of treatments were determined by droplet-feeding assays using neonate Trichoplusia ni (Hubner) for dosage response or single-dosage comparisons. Unformulated virus exposed to 68oC for 2 h showed no loss of insecticidal activity, whereas exposure to 90oC for 30 min caused >20% loss of activity. Thus, residence at higher temperatures in drying systems could adversely affect virus activity. Spray-dried formulations made with Indulin AT lignin (pH 8.5, 9.5, and 10.5) lost insecticidal activity with increasing alkalinity of the dryer feedstock. In contrast to Indulin AT, the same formulations made with PC-1307 lignin did not lose insecticidal activity with increased alkalinity. Adding corn flour to spray-dried Indulin AT-based formulations improved insecticidal activity of the virus. These experiments demonstrated the importance of carefully selecting feed-stock ingredients and processing conditions when spray drying AfMNPV. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 9 gevonden artikelen
| << vorige | volgende >> |