search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 16, No. 2, 2012, pp. 189-193
Bioline Code: ja12032
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 16, No. 2, 2012, pp. 189-193

 en Bio-deterioration of sweet potato ( ipomoea batatas check for this species in other resources lam) in storage, inoculation-induced quality changes, and control by modified atmosphere
Olaitan, Oyeyipo Olutimilehin

Abstract

The biodeterioration of sweet potato ( Ipomoea batatas check for this species in other resources ) was investigated at Port Harcourt, south southern Nigeria. Aspergillus niger check for this species in other resources , Fusarium oxysporum check for this species in other resources , Rhizopus stolonifer check for this species in other resources , Botryodiplodia theobroma check for this species in other resources and Penicillium check for this species in other resources sp. were found to be associated with deteriorating sweet potato tubers and used for inoculation of fresh sweet potato samples. The four prevalent isolates (Aspergillus niger, Fusarium oxysporum Botryodiplodia theobroma and Rhizopus stolonifer) were each used to inoculate other sweet potato samples. Storage of samples in modified atmospheres and the effects of inoculation on quality changes were also evaluated. Modified atmospheres created by packing the samples inside a polythene bag of 18 µm thickness significantly maintained the quality of the samples. Inoculation of samples with the four prevalent rot fungi significantly (p = 0.05) increased crude protein, lipid and ash content. In contrast, there was a significant decrease in carbohydrate and moisture content when compared with the controls. Modified atmosphere is therefore recommended for control of sweet potato rots and extension of storage life.

Keywords
sweet potato (Ipomoea batatas, post harvest rots; fungi; control; modified atmosphere

 
© Copyright 2012 - Journal of Applied Sciences and Environmental Management

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil