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https___www.botanical-online.com_english_polyunsaturated-fatty-acids-characteristics.htm.xml
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Омега-3 мастните киселини са група здравословни киселини, незаменими за човешкото хранене. Организмът се снабдява с тях чрез храната, защото те не се синтезират от тялото. Тези мастни киселини са необходими за нормалното функциониране на клетката и спомагат за предпазване на тялото от развитие на редица заболявания. Няколко вида Омега-3 мастни киселини, са с много важни функции в човешкото тяло. Алфа-линоленовата киселина (ALA), приемана чрез храната, се разгражда от организма до ейкозапентаенова киселина (EPA) и докозахексаенова киселина (DHA). Те са полиненаситени мастни киселини, считани за „добри мазнини”, за разлика от наситените и трансмазнините. Омега-3 не се втвърдяват толкова бързо, колкото мазнини, намерени в червеното месо, например. Прочетете пълната статия в сайта на Вита Херб.
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Polyunsaturared fatty acids properties CHARACTERISTICS OF POLYUNSATURATED FATTY ACIDS Polyunsaturated fatty acids are a type of fats that are characterized by the presence of two or more double bonds between the carbon chains that make up the fatty acid. Some polyunsaturated fatty acids are essential, meaning that the human organism is unable to synthesize them and have to be fed through. Essential fatty acids are polyunsaturated fats omega 3 (linolenic acid) and omega 6 (linoleic acid). Essential fatty acids play an important role for the nervous system, cardiovascular health and have a major role in diseases such as arthritis, hyperactivity or lupus. Types of polyunsaturated fatty acids The most common polyunsaturated fatty acids in foods are usually those containing 18, 20 and 22 carbons. - Of the family of omega 6, we found linoleic acid and arachidonic acid (AA). - Of the family of omega 3, we found linolenic acid, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). They are designated, respectively, with the following nomenclature: - C18: 2, linoleic acid - C18: 3, linolenic acid - C20: 4, arachidonic acid (AA) - C20: 5, eicosapentaenoic acid (EPA) - C22: 6, docosahexaenoic acid (DHA) The first number indicates the amount of fatty acid carbons. The preceding number designates the number of double bonds or unsaturations it contains. In this case they are polyunsaturated and consequently, the value is greater than one. Essential fatty acids Within the group of polyunsaturated fatty acids, there are only two fatty acids that are essential for our body. These essential fatty acids are linoleic acid (18: 2) and linolenic acid (18: 3), which are called omega 6 and omega 3, respectively. The structural difference between these two types of omega fatty acids lies in the location of the first double bond they contain in their carbon chain. Being at carbon 6 and at carbon 3, respectively. Why are they essential fatty acids? Our body is able to make carbon structures with double bonds from carbon number 9, so, as these two fatty acids contain one and two double bonds (respectively) prior to carbon 9, our body can not synthesize them. For this reason, they are considered essential and have to be ingested through our food to obtain them, not to generate nutritional deficiencies or synthesis. All other fatty acids can be synthesized through other substrates in our body, therefore, they are not essential. Derivatives of essential fatty acids omega 3 and omega 6 Through ingestion of essential fatty acids, our body can synthesize other polyunsaturated fatty acids from longer chains. Among these polyunsaturated fatty acids of longer chains, the most relevant are: - C20: 4, arachidonic acid (AA) - C20: 5, eicosapentaenoic acid (EPA) - C 22: 6, docosahexaenoic acid (DHA) Bluefish directly contains EPA and DHA fatty acids, and cod liver oil supplements are very effective when the benefits of omega 3 are desired. By directly providing EPA and DHA, they save the body from having to make this transformation. Table of common polyunsaturated fatty acids Foods rich in polyunsaturated fatty acids Table of foods rich in polyunsaturated fatty acids * Related information: More information on fats in the listing above. Other interesting articles This material is for informational purposes only. In case of doubt, consult the doctor. "Botanical" is not responsible for damages caused by self-medication.