Search results for " Oil"
showing 10 items of 1049 documents
Fungistatic activity of essential oils of Laurus nobilis, Mentha X Piperita and Ruta graveolens against Rhizoctonia solani Kunn and Sclerotinia scler…
2004
no
Leberfunktion von Ratten nach chronischer VerfÜtterung von90Sr
1966
Nach chronischer VerfUtterung von90Sr in Mengen von 140 und 350 pC/g Ca konnte bei Ratten eine leichte Beeintrachtigung der Ausscheidungsleistung der Leber im Bromsulfonphthalein-Test nachgewiesen werden. Diese Wirkung verstarkte sich mit Erhohung der zugefUhrten90Sr-Menge und mit Verlangerung der FUtterungsdauer. Da der Anstieg der Farbstoffretentionswerte in diesen Versuchen nur ein geringes Ausmas erreichte, wird somit wahrscheinlich gemacht, das durch eine sehr lang dauernde FUtterung von90Sr mit den hier gewahlten Dosierungen keine Leberschadigung ausgelost wird.
Effects of extra-virgin olive oil enriched with E-vitamin and Q10-coenzyme on the heart rate variability and plasma antioxidant status in athletes
2010
OBJECTIVES: To examine whether the assumption of extra virgin olive oil enriched with E-vitamin and Q10-coenzyme may improve the plasma anti-oxidant/pro-oxidant balance and be associated with favorable changes in heart rate variability (HRV). METHODS: Four male athletes, mean age 22 (range 21-24), were recruited. They assumed 20 ml per day of the integrator (20 mg Q10 and 15 mg Vit E) for one month. The plasma antioxidant capacity (AC) was evaluated by the crocin bleaching assay. The frequency-domain analysis of HRV was carried out using Cardioline Cube recorder and specific software to obtain, from an autoregressive power spectrum approach, the power in normalized units (nu) of the low-(LF…
Tridimensional molecular assembly of the major components of extra-virgin olive oils
2009
SUPRAMOLECULAR ORGANIZATION OF TRIGLYCERIDES IN EXTRA-VIRGIN OLIVE OILS AS ASSESSED BY NMR RELAXOMETRY
2010
Low resolution nuclear magnetic resonance (NMR) relaxometry revealed that triglycerides in extra-virgin olive oils are organized in inverse-micelle-like supramolecular structures held together by weak interactions such as van der Waals and hydrogen bonding. The formers can be established among the external apolar tails, while hydrogen bonds are present among the internal polar triglyceride heads, involving also the polar minor constituents of extra- virgin olive oils. The supramolecular assembly has been supported by experiments conducted by heating the samples in the NMR probe at four different temperatures. In addition all the oils were also added with increasing amounts of glacial acetic…
Calorimetric investigation of the vulcanization of factice
1991
Sulphur factice is produced from a mixture of a vegetable oil and sulphur at temperatures between 130 and 160‡C. The slow exothermal vulcanization results in rubber-like elastomers. We have developed an isothermal calorimeter for measurements both in the liquid and the solid state and simulated the production process at the laboratory scale. The compensating calorimeter consists of a hot plate equipped with thin aluminium rods descending into a Dewar vessel. Besides optimization of the temperature control, remarkable savings of time were achieved by previous elaidinization of the oil using hydrosulphide.
Psychosocial stress, catecholamines, and essential fatty acid metabolism in rats.
1994
To examine the effects of psychosocial stress and the "stress hormone," epinephrine, on essential fatty acid metabolism in rats, two studies were conducted. In the first, the effects of four weeks of (i) social isolation and (ii) group housing (control) on liver microsomal delta 6 and delta 5 n-6 desaturase activity were studied in group-reared male normotensive (Wistar Kyoto) and spontaneously hypertensive (SHR) rats (n = 5/group). The second study examined the effects of acute ip epinephrine (0.0, 1.0, 2.0, and 4.0 mg/kg) 6 hr prior to and following an ig dose (4 g/kg) of safflower oil (rich in 18:2n-6, LA) on plasma and liver LA, 20:4n-6 (AA), and LA/AA ratios in adult essential fatty ac…
In Vitro Bioactivity of Astaxanthin and Peptides from Hydrolisates of Shrimp (Parapenaeus longirostris) By-Products: From the Extraction Process to B…
2021
Non-edible parts of crustaceans could be a rich source of valuable bioactive compounds such as the carotenoid astaxanthin and peptides, which have well-recognized beneficial effects. These compounds are widely used in nutraceuticals and pharmaceuticals, and their market is rapidly growing, suggesting the need to find alternative sources. The aim of this work was to set up a pilot-scale protocol for the reutilization of by-products of processed shrimp, in order to address the utilization of this valuable biomass for nutraceutical and pharmaceuticals application, through the extraction of astaxanthin-enriched oil and antioxidant-rich protein hydrolysates. Astaxanthin (AST) was obtained using …
Chemistry and functional properties in prevention of neurodegenerative disorders of five Cistus species essential oils.
2013
The chemical composition of Cistus creticus, Cistus salvifolius, Cistus libanotis, Cistus monspeliensis and Cistus villosus essential oils has been examined by GC and GC–MS analysis. Height-nine constituents were identified in C. salvifolius oil, sixty in C. creticus, fifty-six in C. libanotis, fifty-four in C. villosus, forty-five in C. monspeliensis. Although the five species belong to the same genus, the composition showed interesting differences. Essential oils were screened also for their potential antioxidant effects (by DPPH, ABTS, FRAP and b-carotene bleaching test) and their acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activity, useful for prevention and …
Growth and food utilisation of rainbow trout (Oncorhynchus mykiss) fed low-fat herring and dry diets enriched with fish oil
1998
Two-year-old rainbow trout (initial weight 695 g) were fed for 15 weeks low-fat Baltic herring diets either with or without lipid enrichment. For comparison, similar groups of trout were fed dry pellets with and without top-dressing with fish oil. Inclusion of lipid increased growth rate in a similar manner for both types of diets. For the herring-based diet, increased lipid resulted in increased dry matter consumption but for the dry diet, feed efficiency (dry weight growth per dry weight food consumption) was improved by channelling more nutrients to lipid deposition. If compared within a stated lipid level, fish fed the herring-based diets grew at a slower rate than fish fed the dry diet…