Grass-based ruminant production methods and human bioconversion of vaccenic acid with estimations of maximal dietary intake of conjugated linoleic acids |
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| Authors: | Remo P. Jutzeler van Wijlen Paolo C. Colombani |
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| Affiliation: | 1. Institute of Animal Science, 2232 Kostinbrod, Bulgaria;2. CIMO Mountain Research Centre, School of Agriculture, Polytechnic Institute of Braganza, Campus de Santa Apolónia, 5300 Bragança, Portugal;1. Consejo Nacional de Investigaciones Científicas y Técnicas CONICET, Av. Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina;2. Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 115 y 47, 1900 La Plata, Buenos Aires, Argentina;4. INTA-LABINTEX, UMR-Qualisud Assistante UMR QUALISUD TA B 95/16, 73, rue Jean-François Breton, 34398 Montpellier Cedex, France;5. Centro de Investigación y Desarrollo en Criotecnología de Alimentos CIDCA-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 116, 1900 La Plata, Buenos Aires, Argentina;6. Instituto Tecnología de Alimentos, Centro de Investigación Agroindustria, Instituto Nacional de Tecnología Agropecuaria INTA Castelar, Nicolás Repetto y de los Reseros, cc77, B1708WAB Morón, Buenos Aires, Argentina;7. Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnología Agropecuaria, Ruta Nac. 226, km 73.5, 7620 Balcarce, Argentina;1. Centro de Investigación y Tecnología Agroalimentaria (CITA), Gobierno de Aragón, Avda. Montañana 930, 50059 Zaragoza, Spain;2. E.T.S. Ingenieros Agrónomos, Universidad Pública de Navarra, Campus de Arrosadia, 31006 Pamplona, Spain;3. Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013 Zaragoza, Spain;4. Centro IRTA, Finca Camps i Arnet, 17121 Monells, Spain |
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| Abstract: | Reports on human conjugated linoleic acids (CLAs) intake vary, and usually don't consider food production methods and vaccenic acid (VA)-induced CLA biosynthesis in humans. The aim of this review was to estimate the achievable CLA intake considering both food sources produced by feeding patterns natural to animals and human VA bioconversion. Exogenous CLA supply from milk, cheese, lamb, and beef from grass-based ruminant production methods, was calculated to be about double that of estimates based on modern production methods (respectively, from the four sources: 1.25, 1.50, 1.44, and 0.69% of total fatty acids). Using available human consumption data this resulted in an estimated achievable CLA intake (including VA bioconversion) of between 711 and 1107 mg d?1. Intake of products from natural grass-fed ruminants leads to a several-fold higher CLA food content and, along with consideration of endogenously formed CLA from VA, results in a substantially higher CLA availability than previously estimated. |
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