eprintid: 7288
rev_number: 10
eprint_status: archive
userid: 30
dir: disk0/00/00/72/88
datestamp: 2013-12-16 05:22:08
lastmod: 2014-01-10 09:39:52
status_changed: 2013-12-16 05:22:08
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@cgiar.org
creators_name: Mutegi, C K
creators_name: Wagacha, J M
creators_name: Christie, M E
creators_name: Kimani, J
creators_name: Karanja, L
icrisatcreators_name: Wagacha, J M
icrisatcreators_name: Kimani, J
affiliation: IITA(Nairobi)
affiliation: Kenya Agricultural Research Institute(Nairobi)
affiliation: ICRISAT(Nairobi)
affiliation: University of Nairobi(Nairobi)
affiliation: Virginia Tech(Blacksburg)
affiliation: Centre for Agricultural Bioscience International(Nairobi)
country: Kenya
title: Effect of storage conditions on quality and aflatoxin contamination of peanuts (Arachis hypogaea L.)
ispublished: pub
subjects: s1.3
full_text_status: public
note: The authors thank USAID, through the Peanut Collaborative Research Support Program (Peanut CRSP) funded by USAID cooperative agreement ECG-A-00-07-00001- for financial support in conducting this research, and ICRISAT for allowing us to use the aflatoxin research laboratory. Mr. Jeremiah M’thika and Ms. Rosemary Kamau of the Department of Food Science, Nutrition and Technology, University of Nairobi are gratefully acknowledged for technical support.
abstract: Peanuts are prone to various types of deterioration during storage which renders them unsuitable for consumption and trade resulting in large economic losses. Peanut kernels of Homabay Local, Valencia Red, ICGV-SM 12991 and ICGV-SM 99568 varieties were stored for six months in jute, polypropylene and polyethylene bags to assess the effect of the storage bags, temperature and relative humidity (R.H.) on quality and aflatoxin contamination. Moisture content (M.C.), physical damage, rancidity and aflatoxin levels were determined before storage and after every 30 days during storage. Moisture content of the peanuts varied significantly (p ≤ 0.05) from 3.3 to 6.9% with samples stored in different bag types recording mean values of: 5.1% - polypropylene, 5.2% - polyethylene, and 5.3% - jute. Physical damage – which ranged from 0.1 to 9.8% - was significantly influenced by storage temperature and R.H., and the type of storage bag. Rancidity ranged from 0.8 to 5.3 and increased with storage duration from a mean of 1.5 before storage to a peak of 2.5 after 5 months of storage. There was a significant variation in the total aflatoxin levels ranging from 0 – 47.8 μg/kg, where peanuts stored in polyethylene bags were 7.3 and 13.4% more contaminated than samples stored in polypropylene and jute bags, respectively. Dried peanuts should be packaged in a container that will impede critical increases in M.C. and aflatoxin contamination and stored in a well-ventilated dry room with adequate air circulation.
date: 2013
date_type: published
publication: International Journal of AgriScience
volume: 3
number: 10
publisher: International Academic Journals
pagerange: 746-758
refereed: TRUE
issn: 2228-6322
related_url_url: http://scholar.google.co.in/scholar?as_q=%22Effect+of+storage+conditions+on+quality+and+aflatoxin+contamination+of+peanuts+%28Arachis+hypogaea+L.%29%22&as_epq=&as_oq=&as_eq=&as_occt=any&as_sauthors=&as_publication=&as_ylo=&as_yhi=&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
funders: United States Agency for International Development
projects: Peanut Collaborative Research Support Program (Peanut CRSP)
citation:   Mutegi, C K and Wagacha, J M and Christie, M E and Kimani, J and Karanja, L  (2013) Effect of storage conditions on quality and aflatoxin contamination of peanuts (Arachis hypogaea L.).  International Journal of AgriScience, 3 (10).  pp. 746-758.  ISSN 2228-6322     
document_url: http://oar.icrisat.org/7288/1/IntlJAgriSci_3_10_746_758_2013.pdf