Microwave energy was applied to inactivate the oxydoreductases peroxidase (POD, EC 1.11.1.7) and polyphenol oxidase (PPO, EC 1.14.18.1) in processed fruit products. Microwave blanching of papaya, strawberry and kiwi purees at various conditions of power and time produced inactivation of PPO and POD
Effect of dietary iron on the colour and pigment concentration of veal
β Scribed by D. B. Macdougall; I. Bremner; A. C. Dalgarno
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 465 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0022-5142
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β¦ Synopsis
Abstract
The colour and pigment concentration of muscles from veal calves whose dietary iron intake was 10, 40 and 100 ΞΌg/g milk powder were measured. The colour was related to pigment content which was related to the dietary iron concentration and anatomical location of the muscle. The myoglobin content of veal from calves receiving 100 ΞΌg Fe/g was twice that of veal from calves receiving 40 ΞΌg Fe/g but there was no difference in myoglobin content between 10 and 40 ΞΌg Fe/g. Calves receiving 10 ΞΌg Fe/g contained less haemoglobin in their blood. The lightness of cooked veal was found to be linear with the lightness of the raw, with little change in saturation but a large change in hue.
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