## Abstract A spectrophotometric method based on the reaction between available lysine and __ortho__‐phthaldialdehyde (OPA) was adapted and validated for fluorometric determination of the chemically available lysine contents in milk matrices (UHT and conventional in‐bottle sterilized cow milk, milk
Blockage of available lysine at different stages of infant cereal production
✍ Scribed by Fernandez-Artigas, Pilar; Garcia-Villanova, Belen; Guerra-Hernandez, Eduardo
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 63 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0022-5142
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✦ Synopsis
Determination of available lysine was used to assess the heat damage produced during the processing of cereals for infant foods. The infant cereals analysed were: wheat, 7 and 8 cereals, rice, rice±corn, rice±corn±soy and oat. Lysine losses during the toasting of ¯ours ranged between 14 and 29%. Roller-drying treatment caused considerable heat damage, with a 53% decrease of available lysine in roller-dried rice±corn±soy. However, oat ¯our was less susceptible, with a 5% reduction in available lysine during roller-drying.
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