A New Approach in Edible Oil Refining: Minimal Refining Method

Year 2016, Volume: 14 Issue: 2, 172 - 179, 01.06.2016

Fahri Yemişçioğlu Onur Özdikicierler Aytaç Saygın Gümüşkesen

Abstract

Vegetable oils consist mainly of triacylglycerols but also contain considerable amount of desirable and undesirable minor components. Crude vegetable oils are subjected to chemical or physical refining operations to remove undesirable components such as gums, free fatty acids, oxidative products, and pigments. However, desirable health promoting bioactive compounds are also removed or reduced during refining operations such as tocols, phenolic components, plant sterols, and squalene. First part of this review describes chemical composition of bioactive compounds and qualitative/quantitative changes in bioactive components during refining stages. Second part deals with a minimal refining method, a new approach in edible oil refining designed to give less hazard to chemical structure of triglycerides and bioactive compounds

Keywords

Chemical refining, Physical refining, Bioactive compounds, Minimal refining

Bitkisel Yağ Rafinasyonunda Yeni Bir Yaklaşım: Minimal Rafinasyon

Abstract

Bitkisel yağlar triaçilgliserollerin yanında, miktarı düşük olmakla beraber yağın kalitesini etkileyen minör bileşenleri de içermektedir. Yapışkan maddeler, serbest yağ asitleri, oksidasyon ürünleri, renk maddeleri gibi istenmeyen bileşenlerin yağdan uzaklaştırılmasında, kimyasal ve fiziksel rafinasyon yöntemleri kullanılmaktadır. Ancak rafinasyon kademelerinde, işlem koşullarına da bağlı olarak tokoller, fenolik maddeler, bitkisel steroller, skualen gibi insan sağlığı açısından önemli olan bazı biyoaktif bileşenlerde de kayıplar meydana gelmektedir. Bu derlemenin ilk bölümünde, bitkisel yağlardaki bazı biyoaktif bileşenlerin yapısal özellikleri ile bu bileşenlerde rafinasyon kademelerinde oluşan nitel/nicel değişimler, ikinci bölümünde ise yağın trigliserit yapısında ve biyoaktif bileşenlerinde en az değişimin amaçlandığı yeni rafinasyon yaklaşımlarından minimal rafinasyon ele alınmıştır

Keywords

Kimyasal rafinasyon, Fiziksel rafinasyon, Biyoaktif bileşenler, Minimal rafinasyon

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