Microencapsulated food‐grade antioxidant applied as a preservative of peanut seed quality in microcosm‐ and pilot‐scale trials

BACKGROUND In Argentina, peanuts are stored for 3–6 months. It is important to avoid proliferation of fungi and insect pests during this period. In this study, the potential of butylated hydroxyanisole (BHA) microcapsules to conserve peanut kernels was evaluated in microcosms and on a pilot scale. R...

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Bibliographic Details
Published in:Journal of the science of food and agriculture 2019-03, Vol.99 (5), p.2473-2480
Main Authors: Girardi, Natalia Soledad, Garcia, Daiana, Passone, María Alejandra, Nesci, Andrea, García, Julián, Etcheverry, Miriam
Format: Article
Language:English
Subjects:
Antioxidants
BHA
BHA formulation
Butylated hydroxyanisole
Combined treatment
Contamination
Food contamination
Fungi
Fungicides
Germination
Insects
Kernels
Metalaxyl
Microcapsules
Microcosms
microcosms and pilot‐scale trials
Nuts
Organic chemistry
peanut
Peanuts
Pests
physiological seed quality
Seed germination
Seeding
Seeds
Storage
Storage conditions
Thiophanate
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Summary:BACKGROUND In Argentina, peanuts are stored for 3–6 months. It is important to avoid proliferation of fungi and insect pests during this period. In this study, the potential of butylated hydroxyanisole (BHA) microcapsules to conserve peanut kernels was evaluated in microcosms and on a pilot scale. RESULTS In microcosm assays, microcapsules containing BHA at a dose of 1802 µg g−1 reduced 37% of total fungal count. Higher reductions (77–100%) were obtained with a combined treatment with BHA formulation (1802 µg g−1) plus fungicide (methyl thiophanate 0.0100 g L−1 and metalaxyl 0.0133 g L−1). However, germination levels of peanut seeds treated with the BHA formulation were less than 6% throughout the incubation time. In pilot‐scale trials, the storage conditions allowed the control of fungal development and insect proliferation. Quantifiable levels of BHA were also detected throughout the entire storage period. The combined treatment significantly reduced fungal contamination at 2 months of storage (C1‐2015: 37.41%; C1‐2016: 28.48%; C2‐2016: 45.02%). Seed germination of unshelled stored peanuts was not affected by the formulation. CONCLUSION The application of the BHA formulation during storage combined with pre‐seeding treatment could be an appropriate strategy to maintain the quality of the peanut kernels destined for seed. © 2018 Society of Chemical Industry
ISSN:0022-5142
1097-0010
DOI:10.1002/jsfa.9456