Skip to main content

Influence of formulation additives on the desiccation tolerance and storage stability of blastospores of the entomopathogenic fungus Paecilomyces fumosoroseus (Deuteromycotina: Hyphomycetes)1 1 The mention of firm names or trade products does not imply that they are endorsed or recommended by the US Department of Agriculture over other firms or similar products not mentioned.

Buy Article:

$63.00 plus tax (Refund Policy)

Blastospores of the entomopathogenic fungus Paecilomyces fumosoroseus were formulated with 10% lactose/1% bovine serum albumin (BSA) or various compositions of Fantesk™, a starch–oil composite prepared by jet-cooking an aqueous dispersion of starch and oil. Storage stability studies with wet blastospore formulations showed that maximum blastospore survival was achieved during low-temperature storage at −20°C with lactose/BSA formulations or starch–oil formulations supplemented with sucrose, zein protein, and whole milk. Under conditions of wet storage at −20°C, the addition of whole milk to starch–oil formulations significantly improved blastospore stability while the addition of sucrose or zein protein had no effect. In freeze-drying studies, no significant differences were seen in blastospore desiccation tolerance or in stability during storage at either 4 or −20°C when blastospores of P. fumosoroseus were formulated with lactose/BSA or starch–oil formulations with sucrose, zein protein, and whole milk. Freeze-dried blastospore formulations stored at 4°C showed no loss in blastospore viability after 3 months storage and blastospore formulations stored at −20°C showed no loss in viability during the entire 12-month study. For freeze-dried, starch–oil formulations, sucrose was shown to improve blastospore survival during the freeze-drying process. The addition of whole milk to starch–oil formulations significantly improved the stability of freeze-dried blastospores stored at 4°C. Compared to unformulated blastospore suspensions that showed blastospore settling after 30 min, suspensions of blastospores formulated with lactose/BSA or starch–oil composites remained stable for up to 2 h after mixing.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: Fantesk™; Paecilomyces fumosoroseus; biocontrol; bioinsecticide; blastospores; fermentation; formulation; storage stability

Document Type: Research Article

Affiliations: 1: National Center for Agricultural Utilization Research, USDA, Agricultural Research Service, Peoria, IL, USA 2: Subtropical Agricultural Research Center, USDA, Agricultural Research Service, Weslaco, TX, USA

Publication date: 2006-01-01

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more