期刊
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
卷 56, 期 8, 页码 3655-3661出版社
WILEY
DOI: 10.1111/ijfs.14675
关键词
Carboxymethyl cellulose; cassava starch; egg coating; hydroxypropyl methylcellulose; palm oil
An egg coating was developed using cassava starch, gelling agents, and fatty acids, which proved to be effective in preserving the internal quality of eggs. The addition of carboxymethyl cellulose (CMC) and palm oil fatty acid (PO) improved water resistance of the coating, leading to a longer shelf life for eggs.
An egg coating was developed to preserve the internal quality of eggs by mixing cassava starch (CS), gelling agents and fatty acids. Hydroxypropyl methylcellulose (HPMC) and carboxymethyl cellulose (CMC) were used as gelling agents. Palm oil fatty acid (PO) was incorporated. Coated and non-coated eggs were evaluated over a period of 4 weeks at 28 degrees C by the yolk colour, weight loss, albumen pH and Haugh unit testing. The quality of non-coated eggs deteriorated from AA to B grade after 3 weeks, with values below the detection limit at 4 weeks. The optimum coating was 6/1/3 w/v% (CS/CMC/PO3). Contact angle, solubility and swelling in the water of the coating materials indicated the improvement of water resistance by addition of CMC and PO. Weight loss of the coated eggs was 4.9% lower than that of the non-coated eggs (6.5%) after 4 weeks. The CS/CMC/PO3 emulsion coating significantly extended egg shelf life due to the high compatibility and water resistance of CMC as well as the hydrophobic property of PO.
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