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Published VersionCC BY V4.0, Open Access
Journal article
Presence of Testa and Shell Maintains Oil Stability in Almond and Canarium Nuts
Horticulturae, Vol.9(9), pp.1-10
2023
Abstract
(1) Background: The oil stability of tree nuts during storage can be influenced by storage conditions such as temperature, humidity, and moisture concentration. However, few studies have assessed how the presence of testa and shell affects the oil stability of tree nuts during storage. We aimed to determine how storage conditions affect oil stability in almond and canarium, in particular, the presence of testa and storage time of nut-in-shell (NIS). (2) Methods: We measured peroxide value (PV), free fatty acid (FFA) and hexanal concentrations of almond and canarium (blanched vs. kernel-in-testa) stored at 45 • C for 24 days. We also measured PV, FFA and fatty acid composition of canarium samples at days 0 and 140 stored as NIS under ambient conditions. (3) Results: The presence of testa in almond and canarium decreased hexanal and PV concentrations at day 24 of incubation. Canarium PV and FFA concentrations increased over 140 days of storage in the shell compared to day 0. However, both PV and FFA concentrations remained within the acceptable threshold during storage. No changes in fatty acid composition were found during NIS storage. (4) Conclusions: Testa and shell could act as a natural coating, slowing down oxidation rates. Hence, long-term storage on nuts in testa or nuts in shell are recommended for tree nuts.
Details
- Title
- Presence of Testa and Shell Maintains Oil Stability in Almond and Canarium Nuts
- Authors
- Shahla Hosseini Bai (Corresponding Author) - Griffith UniversityRepson Gama (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringKim Jones (Author) - Cropwatch Independent LaboratoriesDalsie Hannet (Author) - National Agricultural Research InstituteGodfrey Hannet (Author) - National Agricultural Research InstituteBirte Komolong (Author) - National Agricultural Research InstitutePeter Brooks (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringElektra Grant (Author) - Griffith UniversityBrittany Elliott (Author) - Griffith UniversityHelen Wallace (Author) - Griffith University
- Publication details
- Horticulturae, Vol.9(9), pp.1-10
- Publisher
- MDPI AG
- Date published
- 2023
- DOI
- 10.3390/horticulturae9091003
- ISSN
- 2311-7524
- Copyright note
- © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
- Grant note
- FST/2014/099 and FST/2017/038 / Australian Centre for International Agricultural Research
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy; School of Science, Technology and Engineering; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99966897102621
- Output Type
- Journal article
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