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Journal of Food Science and Technology

, Volume 53, Issue 1, pp 694–702 | Cite as

Quality changes of stabilizer-free natural peanut butter during storage

  • N. H. Mohd Rozalli
  • N. L. Chin
  • Y. A. Yusof
  • N. Mahyudin
Original Article

Abstract

The storage stability of preservative-free peanut butter was evaluated for changes in physicochemical quality including moisture content and water activity, microbiological properties, oxidative stability and textural quality in terms of spreadability and firmness. The study was conducted for 16 weeks at storage temperature of 10, 25 and 35 °C on natural and pure peanut butter produced from two varieties of peanuts, the Virginia and Spanish TMV-2 varieties of China and India origin, respectively. The peanuts were ground using a high speed grinder for 2.5 and 3.0 min to produce peanut butter without addition of other ingredient. The natural peanut butter exhibited stability and had acceptable microbial count during storage. Storage at 10 °C gave similar textural quality with commercial product until week 8 and without appreciable loss in oxidative stability until week 12. At higher storage temperatures of 25 and 35 °C, oxidative stability was shortened to 4 weeks of storage. Among the factors of storage temperature and time, grinding time and peanut variety, storage temperature had the most significant effects on quality changes of natural peanut butter.

Keywords

Natural peanut butter Storage Physicochemical properties Microbial count Oxidative stability Textural quality 

Notes

Acknowledgments

Authors are thankful to the Ministry of Education of Malaysia and Universiti Sains Malaysia for their financial support of scholarship programme under Academic Staff Teaching Schemes (ASTS/SLAI), and Universiti Putra Malaysia for funding of this project through Research University Grant Scheme No. 05-02-11-1399RU.

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Copyright information

© Association of Food Scientists & Technologists (India) 2015

Authors and Affiliations

  • N. H. Mohd Rozalli
    • 1
  • N. L. Chin
    • 2
  • Y. A. Yusof
    • 2
  • N. Mahyudin
    • 3
  1. 1.Food Technology Division, School of Industrial TechnologyUniversiti Sains MalaysiaUSMMalaysia
  2. 2.Department of Process and Food Engineering, Faculty of EngineeringUniversiti Putra MalaysiaSerdangMalaysia
  3. 3.Department of Food Science, Faculty of Food Science and TechnologyUniversiti Putra MalaysiaSerdangMalaysia

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