The effect of heat treatments and homogenisation of cows' milk on gastrointestinal symptoms, inflammation markers and postprandial lipid metabolism

Dairy products are often reported as a source of stomach discomfort, and processing of cows' milk has been claimed to be one reason for this. To investigate the role of milk processing on adverse gastrointestinal symptoms, a cross-over, double blind clinical trial with fourteen milk sensitive subjects was set up. Pasteurised, pasteurised and homogenised, and ultra-high temperature-treated and homogenised milk, representing products from the mildest and hardest processing, were used as study meals. The amount, severity or duration of the reported symptoms or postprandial lipaemia did not differ, while significant differences were seen in the postprandial fatty acid composition of plasma between the milk types. The 92 inflammation markers measured in plasma did not differ between the subjects who consumed different types of milk. The results of the present study do not support the hypothesis that cows' milk processing could induce gastrointestinal symptoms in milk sensitive but lactose tolerant subjects. (C) 2018 Elsevier Ltd. All rights reserved

Effect of homogenised and pasteurised versus native cows' milk on gastrointestinal symptoms, intestinal pressure and postprandial lipid metabolism

Some people experience gastrointestinal symptoms related to cow's milk consumption even if neither lactose intolerance nor cow's milk allergy can be diagnosed. To investigate whether milk homogenization could cause gastrointestinal problems, homogenized and pasteurized milk and native milk were served to eleven volunteers who reported such sensitivity in a random order together with an ingestible pressure measuring capsule. Postprandial lipemia did not differ between the two milk types, but significant differences were found in the postprandial plasma fatty acid composition. No significant difference was found in the amount of gastrointestinal symptoms or in the intestinal pressure after the consumption of native and processed milk. However, the obtained results on pressure in the large intestine (P = 0.068) as well as reported symptoms (P = 0.103) suggest that further studies in this area are needed with a bigger subject group and with longer exposure times to differently processed milk types. (C) 2017 Elsevier Ltd. All rights reserved

The effect of heat treatments and homogenisation of cows’ milk on gastrointestinal symptoms, inflammation markers and postprandial lipid metabolism

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