Electron Beam Radiation of Dried Fruits and Nuts To Reduce Yeast and Mold Bioburden

Authors: Ic, Erhan¹; Kottapalli, Bala²; Maxim, Joseph³; Pillai, Suresh D.³

Source: Journal of Food Protection®, Volume 70, Number 4, April 2007 , pp. 981-985(5)

Publisher: International Association for Food Protection

Buy & download fulltext article:

Price: $37.00 plus tax (Refund Policy)

Abstract:

Dried fruits and nuts make up a significant portion of the commodities traded globally, and the presence of yeasts and molds on dried fruits and nuts can be a public health risk because of the potential for exposure to toxigenic fungi. Since current postharvest treatment technologies are rather limited for dried fruits and nuts, electron beam (E-beam) radiation experiments were performed to determine the doses required to reduce the yeast and mold bioburden of raisins, walnuts, and dates. The indigenous yeast and mold bioburden on a select number of commodities sold at retail ranged from 10² to 10³ CFU/g. E-beam inactivation kinetics based on the linear model suggest that the decimal reduction dose required to eliminate 90% of the microbial population (D₁₀-value) of these indigenous fungal populations ranges from 1.09 to 1.59 kGy. Some samples, however, exhibited inactivation kinetics that were better modeled by a quadratic model. The results indicate that different commodities can contain molds and yeasts of varying resistance to ionizing radiation. It is thus essential for the dried fruit and nut industry to determine empirically the minimum E-beam dose that is capable of reducing or eliminating the bioburden of yeasts and molds in their specific commodities.

Document Type: Research article

Affiliations: 1: Turkish Atomic Energy Authority, ANRCAAS, 06983, Ankara, Turkey 2: IEH Laboratories and Consulting Group, 15300 Bothell Way N., Seattle, Washington 98155, USA 3: National Center for Electron Beam Food Research, Texas A&M University, College Station, Texas 77843-2472, USA

Publication date: 2007-04-01

More about this publication?

IAFP members must first sign in on the right to access full text articles of JFP

First published in 1937, the Journal of Food Protection^®, is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection^® is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.

Print and online subscriptions are available to Members and Institutional subscribers. Online visitors who are not IAFP Members or journal subscribers will be charged on a pay-per-view basis. Information can be obtained by calling +1 800.369.6337; +1 515.276.3344; fax: +1 515.276.8655, E-mail: info@foodprotection.org or Web site: www.foodprotection.org
Information for Authors
Submit a Paper
Subscribe to this Title
Membership Information
Information for Advertisers
ingentaconnect is not responsible for the content or availability of external websites

Electron Beam Radiation of Dried Fruits and Nuts To Reduce Yeast and Mold Bioburden

Buy & download fulltext article:

Tools

Key

Text size:

Useful pages