Lipid Composition of Paulownia Seeds Grown in Bulgaria

DergiPark: 246128trakyafbdThe chemical composition of seeds from paulownia (Paulownia tomentosa) was investigated. The main components in the triacylglycerol fraction of the oil were linoleic (64.1%), oleic (21.2%) and palmitic acids (7.3%). ?-Tocopherol (approx. 100.0%) predominated in the tocopherol fraction, and in the sterol fraction – ß-sitosterol (79.2%), campesterol (10.3%) and stigmasterol (7.7%). In the seeds were established 10.6% protein, 9.5% cellulose and 38.2% hydrolysable carbohydrates

LIPIDS OF BLACK SEA ALGAE: UNVEILING THEIR POTENTIAL FOR PHARMACEUTICAL AND COSMETIC APPLICATIONS

Background: Bulgarian Black Sea coast is rich in algae, regarding biomass and algal biodiversity. The red algae Gelidium crinale (Rhodophyta) and brown algae Cystoseira barbata (Phaeophytes) are among the most abundant species along the Bulgarian Black Sea shore. Yet information about their lipid composition is limited. Purpose: Present study was conducted to investigate biologically active substances in two underexplored seaweed lipids. Total lipids, total phospholipids, fat soluble vitamins and carotenoids were analysed. In addition, the specific distribution of fatty acids group among the total lipids and total phospholipids were elucidated. Material/Methods: The saponifiable lipid fraction was derivatized into fatty acid methyl esters (FAMEs) and analysed by gas chromatography–mass spectrometry (GC-MS) to identify and quantify the fatty acids. The fat soluble non-saponifiable lipids were identified by high-pressure liquid chromatography coupled with UV/Vis and fluorescence detectors (HPLC-UV-FL). Results: Results showed that Rhodophyta and Phaeophytes have high concentrations of polyunsaturated fatty acids (PUFA), particularly from the n-3 series, thereby being a good source of these compounds. They presented a “healthy” n-6/n-3 ratio. Both seaweed species showed considerably high amounts of α-tocopherol, β-carotene and astaxanthin. Conclusions: The study reveals that lipids from Black Sea algae have a high potential as natural sources of biologically active ingredients. They are balanced source of fatty acids and contained beneficial antioxidants, such as α-tocopherol, β-carotene and astaxanthin

Composition of Biologically Active Substances of Flaxseed 1

Abstract The content and composition of biologically active substances of three varieties of flaxseeds was investigated. The flaxseeds contain 33.8 %, 38.0 % and 37.1 % glyceride oil respectively. The total content of phospholipids, mainly phosphatidylcholine, phosphatidylinositol, phosphatidylethanolamine and phosphatidic acids in the oils was 0.7 %, 1.0 % and 0.8 %. The general amounts of sterols were found to be 0.3 % in all oils. β-Sitosterol predominated (more than 50.0 %), followed by campesterol and stigmasterol. In the tocopherol fraction (731 mg/kg, 768 mg/kg and 788 mg/kg respectively) γ-tocopherol predominated (61.8 -71.3 %), followed by γ-tocotrienol. Linolenic acid (46.8 %, 49.9 % and 45.0 % respectively) was the main component, followed by oleic and linoleic acids in the triacylglycerols. Higher quantities of palmitic and oleic acids were established in the phospholipids and sterol esters. LnLnLn, LnLnL and LnLnP predominated in triacylglycerols. The oxidative stability was found to be between 6.1 -6.6 h