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- W3189387624 abstract "Unlike other foods of animal origin, the spoilage mechanisms of edible insects remain unknown. This research intends to establish the cause of spoilage of the long-horned grasshopper, Ruspolia differens, with high and low water activity (aw). To achieve this, fresh and spoiled raw and processed grasshoppers stored under different conditions were assessed for (i) fat oxidation, (ii) antioxidant levels, and (iii) volatile compounds which served as indicators for different spoilage mechanisms. Results indicate that the free fatty acid value (6.69% as oleic acid), peroxide value (2.66 mEq O2/kg) and p-anisidine value (1.04) of fresh R. differens are similar to those of spoiled raw (aw = 0.98) and oven-roasted (aw = 0.95) R. differens. The headspace of the latter only possesses volatile sulphur compounds (dimethyl disulphide and dimethyl trisulphide), indicating microbial spoilage. Conversely, the headspace of spoiled R. differens with low aw (< 0.60) only possess volatile aldehydes, ketones and organic acids, indicating oxidative rancidity. The latter have high acid (11.3% as oleic acid), peroxide (17.09 mEq O2/kg) and p-anisidine (11.84) values. Thus, water activity plays an important role in determining the kind of spoilage that R. differens will undergo." @default.
- W3189387624 created "2021-08-16" @default.
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- W3189387624 date "2021-08-10" @default.
- W3189387624 modified "2023-10-17" @default.
- W3189387624 title "Towards establishing the spoilage mechanisms of the long-horned grasshopper Ruspolia differens Serville" @default.
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- W3189387624 doi "https://doi.org/10.1007/s00217-021-03824-9" @default.
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