Chemical changes in almonds throughout storage: modeling the effects of common industry practices

Daniel R. Parrish, Ronald B. Pegg, William L. Kerr, Ruthann B. Swanson, Guangwei Huang, Adrian Kerrihard

Research output: Contribution to journalArticle

Abstract

Further investigations of almond degradation under typical industrial storage conditions from a quantitative perspective are warranted. This study modeled effects of packaging, temperature (TEMP), relative humidity (RH) and roasting on chemical attributes of almonds stored according to common industry practices throughout 16 months. Roasted samples were stored in high-barrier bags (HBB) or polypropylene bags (PPB) at multiple combinations of TEMP and RH. Raw samples were held in unlined cardboard cartons (UC) or PPB under the same conditions. Almonds were assessed bimonthly for oxidation products, free fatty acids, moisture content and water activity. Results indicated roasting almonds improved quality preservation. Models showed HBB (rather than PPB) to provide benefits to stability comparable to reductions in storage TEMP of ~15 to 30 °C. PPB (rather than UC) showed benefits to peroxide formation of similar magnitude. Our data shows HBB to be a superior packaging choice, and UC to associate with the greatest rates of degradation.

Original languageEnglish
Pages (from-to)2190-2198
Number of pages9
JournalInternational Journal of Food Science and Technology
Volume54
Issue number6
DOIs
StatePublished - 1 Jun 2019

Fingerprint

Polypropylenes
almonds
bags
Industry
industry
polypropylenes
cardboard
Product Packaging
Humidity
Temperature
Atmospheric humidity
Packaging
Degradation
roasting
Peroxides
packaging
Fatty acids
Nonesterified Fatty Acids
relative humidity
Moisture

Keywords

  • Almonds
  • lipid oxidation
  • mathematical model
  • packaging materials
  • shelf life

Cite this

Parrish, Daniel R. ; Pegg, Ronald B. ; Kerr, William L. ; Swanson, Ruthann B. ; Huang, Guangwei ; Kerrihard, Adrian. / Chemical changes in almonds throughout storage : modeling the effects of common industry practices. In: International Journal of Food Science and Technology. 2019 ; Vol. 54, No. 6. pp. 2190-2198.
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Chemical changes in almonds throughout storage : modeling the effects of common industry practices. / Parrish, Daniel R.; Pegg, Ronald B.; Kerr, William L.; Swanson, Ruthann B.; Huang, Guangwei; Kerrihard, Adrian.

In: International Journal of Food Science and Technology, Vol. 54, No. 6, 01.06.2019, p. 2190-2198.

Research output: Contribution to journalArticle

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