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Combining PUFA and probiotics is beneficial

  1. Top of page
  2. Combining PUFA and probiotics is beneficial
  3. Rice bran oil-derived spread as a functional ingredient
  4. Producing lipids in stressed algae

In a healthy colon, the epithelial cells must distinguish between pathogenic bacteria and commensals. This means that pro- and anti-inflammatory responses need to be balanced to maintain immunity against invading pathogens but allow survival of the beneficial bacteria such as lactobacilli. Bentley-Hewitt, Lund et al. tested the hypothesis that different colonic immunomodulatory responses to commensal (Lactobacillus gasseri) and pathogenic bacteria (Escherichia coli and Staphylococcus aureus) may be modified by polyunsaturated fatty acids (PUFA). The results suggest that n-3 PUFA may protect against the potentially damaging effects of pathogens and that pre-treatment of colonic epithelial cells with PUFA can modify their immunomodulatory responses.

Bentley-Hewit, K.L. et al. Polyunsaturated fatty acids modify expression of TGF-b in a co-culture model ultilising human colorectal cells and human peripheral blood mononuclear cells exposed to Lactobacillus gasseri, Escherichia coli and Staphylococcus aureus. Eur. J. Lipid Sci. Technol. 2014, 116, 505–513.

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Rice bran oil-derived spread as a functional ingredient

  1. Top of page
  2. Combining PUFA and probiotics is beneficial
  3. Rice bran oil-derived spread as a functional ingredient
  4. Producing lipids in stressed algae

Rice bran oil, which is rich in vitamin E, phytosterols and γ-oryzanol, is extracted from the bran of the rice kernel. Bakota, Winkler-Moser and Liu developed a novel semisolid extract from crude rice bran oil which shows promise for several food uses - for example, it can be combined with edible oils or it can be incorporated in baked goods as a functional ingredient. The material imparts antioxidative activity in a dosedependent fashion under Rancimat conditions, it is free of trans-fats and allergens, high in antioxidants, has a long shelf-life and tastes good.

Bakota, E.L. et al. Evaluation of a rice bran oil-derived spread as a functional ingredient. Eur. J. Lipid Sci. Technol. 2014, 116, 521–531.

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Producing lipids in stressed algae

  1. Top of page
  2. Combining PUFA and probiotics is beneficial
  3. Rice bran oil-derived spread as a functional ingredient
  4. Producing lipids in stressed algae

Oleaginous microalgae of the genus Nannochloropsis respond to changes in cultivation conditions by changing their lipid metabolism. Solovchenko, Khozin-Goldberg et al. studied fatty acid and pigment profile responses of N. oceanica CCALA 804 to stress and the physiological mechanisms of stress acclimation. The focus is on biomass accumulation, production of various lipids including EPA, and on photoprotective responses of the pigment apparatus responsible for the production of light-harvesting carotenoids. Under high light, cultivation on NaCl-free media encouraged biomass and EPA accumulation, while nitrogenstarvation promoted overall fatty acid accumulation with a marked decline in EPA. Regardless of cultivation conditions, the stress-induced changes in carotenoid and fatty acid profile were highly coordinated.

Solovchenko, A. et al. Interactive effects of salinity, high light, and nitrogen starvation on fatty acid and carotenoid profiles in Nannochloropsis oceanica CCALA 804. Eur. J. Lipid Sci. Technol. 2014, 116, 635–644.

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