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

Enrichment of food products with omega-3 and omega-6 long-chain polyunsaturated fatty acids

Positive health results associated with the consumption of oils rich of long-chain polyunsaturated fatty acids have been known since 1780 when fish and vegetables oils were used as a remedy for arthritis and rheumatism for the first time. Since that time, the fish oil is used as a preventive intake during infancy to prevent the occurrence of rickets. Intensive research during the second half of the twentieth century showed that higher polyunsaturated fatty acids have a beneficial effect on the formation and proper nervous system development in infants, reduced incidence of cardiovascular disease, hypertension, hyperlipidemia, cancer, dementia, Alzheimer's disease, depression and inflammation. In the presented scientific standpoint the enrichment of food products with omega-3 and omega-6 long-chain polyunsaturated fatty acids is discussed. Despite the increased number of direct evidence of a link between increased intake levels of polyunsaturated fatty acids and less cardiovascular diseases, the presence in the dietary intake of these acids is still not enough

GREEN METHODS FOR EXTRACTION OF INULIN AND ANTIOXIDANTS FROM CARLINA ACANTHIFOLIA L. ROOTS – A COMPARATIVE STUDY

Green extraction methods present perspective approach for isolation of bioacticve molecules. Together with an ecofriendly approach for extraction there are many undervalued plants - a rich of source of prebiotics and phenolic compounds. Carlina acanthifolia L. roots possessed antimicrobial, anti-inflammatory, anti-ulcer properties due to the diverse bioactive compounds in them. The detailed information about inulin-type fructan in its roots is still absent. The object of this work was to define inulin, sugars and phenolic content, the antioxidant activity in water and 70 % ethanol extracts resulted from ultrasound-assisted extraction (UAE) and pressure-liquid extraction (PLE). The results showed that the total fructans reached 12.6±0.2 g/100 g dw. Inulin was found in water extracts (6.82 g/100 g dw) in the prevalence of the ultrasound-assisted extracts. Total phenolic content did to not exceed 15.25 mg GAE/g dw. Additionally, the antioxidant activities was in the range from 5.99 to 205.83 μM TE/g dw. In conclusion, water extracts from UAE demonstrated higher levels of bioactive compounds with antioxidantive properties, probably due to cavitation process. However, this study is the first detailed investigation for fructans and polyphenols content, as well as antioxidant activity of Carlina acanthifolia L. roots in extracts obtained by green methods. Therefore, this research enriched the information of bioactive compounds in Carlina acanthifolia L. roots

Antioxidant activity and fructan content in root extracts from elecampane (Inula helenium L.)

The purpose of the present study was to investigate the antioxidant activity and fructans content in ethanol and water extracts of roots of elecampane (Inula helenium L.), a Bulgarian medicinal plant. The extraction procedure included 95% (v/v) ethanol extraction and subsequent water treatment. The antioxidant activity was evaluated by several reliable methods such as DPPH-, ABTS-, FRAP- and CUPRAC-assays, as well as the total phenolic content. In addition, the total fructans and sugar content were determinated by spectrophotomeric, TLC and HPLC-RID methods. The level of fructans in ethanol extracts was 14.1 g / 100 g dry weight, as nystose and 1-kestose were only 0.3 g / 100 g dry weight, and 0.5 g / 100g dry weight, respectively. The absence of fructooligosacharides and sugars in water extracts after the ethanol pretreatment was established. Inulin content was evaluated to be 32 g / 100 g dry weight. The metabolites profile of roots revealed their potential application as radical scavengers due to the presence of polyphenols. Therefore, the root extracts of elecampane could be assumed as a rich source of biologically active substance, in particular dietary fiber with potential prebiotic effect, due to the presence of polysaccharide inulin and fructooligosacharides