scholarly journals Comparative study on volatile compounds, fatty acids, squalene and quality parameters from whole fruit, pulp and seed oils of two tunisian olive cultivars using chemometrics

2015 ◽  
Vol 117 (7) ◽  
pp. 976-987 ◽  
Author(s):  
Amir Ben Mansour ◽  
Guido Flamini ◽  
Zied Ben Selma ◽  
Yveline Le Dréau ◽  
Jacques Artaud ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Comparative Study ◽  
Volatile Compounds ◽  
Quality Parameters ◽  
Seed Oils ◽  
Fruit Pulp ◽  
Olive Cultivars

scholarly journals Production and Refinement of Omega-3 Rich Oils from Processing By-Products of Farmed Fish Species

Foods ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 125 ◽  
Author(s):  
Vida Šimat ◽  
Jelena Vlahović ◽  
Barbara Soldo ◽  
Danijela Skroza ◽  
Ivica Ljubenkov ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Oxidative Stability ◽  
Volatile Compounds ◽  
Fish Species ◽  
Quality Parameters ◽  
Fish Oils ◽  
Volatile Components ◽  
Farmed Fish ◽  
By Products

In this study, the effect of a four-stage chemical refining process (degumming, neutralization, bleaching, deodorization) on the quality parameters, fatty acid composition and volatile compounds of crude oils produced from processing by-products of farmed fish species (tuna, seabass and gilthead seabream) was evaluated. The quality of the oils was compared to commercially available cod liver oil on the basis of free fatty acid, peroxide value, p-anisidine, total oxidation (TOTOX), thiobarbituric acid reactive species (TBARS), oxidative stability at 80, 100 and 120 °C, tocopherol content, and volatile components, while the fatty acid profile and the proportion of polyunsaturated fatty acids (PUFAs) were used as an indicator of the nutritional values of fish oils. Quality parameters of the studied oils and oil oxidative stability were enhanced with refining and were within the limits recommended for fish oils without the loss of PUFAs. In tuna by-product refined oils, the proportion of PUFAs was over 40%, with 30% of eicosapentaenoic and docosahexaenoic fatty acids. The volatile compounds of the oils were quantified (in mg/kg) and major components were 2,4-heptadienal, pentadecane, 2,4-decadienal, 2,4-nonadienal and dodecane. The use of aquaculture by-products as an alternative source for fish oil production could contribute to a more sustainable and profitable aquaculture production, providing economic benefits for the producers and setting new standards for a fish by-product disposal strategy.

scholarly journals Influence of breed on selected quality parameters of fresh goat meat

2020 ◽  
Vol 63 (2) ◽  
pp. 219-229
Author(s):  
Snežana Ivanović ◽  
Marija Pavlović ◽  
Ivan Pavlović ◽  
Aleksandra Tasić ◽  
Jelena Janjić ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Chemical Composition ◽  
Volatile Compounds ◽  
Ph Value ◽  
Quality Parameters ◽  
Saanen Goat ◽  
Goat Meat ◽  
Significant Difference ◽  
The Impact

Abstract. The potential of goats to produce a high-quality meat is mainly reflected in their healthy fats, low calorie intramuscular fats, saturated fats, and, especially, their high ratios of unsaturated (UFA) and saturated (SFA) fatty acids, as well as hypocholesterolemic and hypercholesterolemic fatty acids. The aim of this study was to collect and compare meat quality parameters for domestic Balkan, Alpine and Saanen goats of the same age. Samples for all tests were taken from musculus gluteus superficialis. Chemical composition, pH value, fatty acid composition, content of volatile compounds, color and overall sensory quality (appearance, texture and smell) were determined. In chemical composition, moisture, fat, protein and ash varied significantly between each of the examined groups as opposed to pH values. Furthermore, among all the examined groups a significant difference was found for fatty acids and volatile compounds. Determined ratio of polyunsaturated fatty acids (PUFAs) to SFAs was 0.089, 0.085 and 0.071 for Balkan, Alpine and Saanen goat meats, respectively. Regarding that ratio, Saanen goat meat had the most favorable characteristics. Saanen goat meat showed the highest nutritional value. On the other hand, Balkan goat meat had the lowest intramuscular fat content. Measurements of the meat color from all three groups, as well as overall acceptability, showed significant differences between breeds. Obtained results point to the impact of breed on chemical composition and fatty acid profile of goat meat.

Bee collected pollen as a value-added product rich in bioactive compounds and unsaturated fatty acids: A comparative study from Turkey and Romania

LWT ◽  
2021 ◽  
pp. 111925
Author(s):  
Rodica Mărgăoan ◽  
Aslı Özkök ◽  
Şaban Keskin ◽  
Nazlı Mayda ◽  
Adriana Cristina Urcan ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Comparative Study ◽  
Bioactive Compounds ◽  
Unsaturated Fatty Acids ◽  
Value Added ◽  
A Value

scholarly journals The effect of short-term storage temperature on the key headspace volatile compounds observed in Canadian faba bean flour

2021 ◽  
pp. 108201322199884
Author(s):  
Rami Akkad ◽  
Ereddad Kharraz ◽  
Jay Han ◽  
James D House ◽  
Jonathan M Curtis
Keyword(s):  
Fatty Acids ◽  
Volatile Compounds ◽  
Room Temperature ◽  
Unsaturated Fatty Acids ◽  
Solid Phase ◽  
Short Term ◽  
Bean Flour ◽  
Odour Activity Value ◽  
Short Term Storage ◽  
Term Storage

The odour emitted from the high-tannin fab bean flour ( Vicia faba var. minor), was characterized by headspace solid-phase microextraction/gas chromatography-mass spectrometry (HS-SPME/GC–MS). The relative odour activity value (ROAV) was used to monitor the changes in key volatile compounds in the flour during short-term storage at different temperature conditions. The key flavour compounds of freshly milled flour included hexanal, octanal, nonanal, decanal, 3-methylbutanal, phenyl acetaldehyde, (E)-2-nonenal, 1-hexanol, phenyl ethyl alcohol, 1-octen-3-ol, β-linalool, acetic acid, octanoic acid, and 3-methylbutyric acid; these are oxidative degradation products of unsaturated fatty acids and amino acids. Despite the low lipid content of faba beans, the abundances of aldehydes arising during room temperature storage greatly contributed to the flavour of the flour due to their very low odour thresholds. Two of the key volatiles responsible for beany flavour in flour (hexanal, nonanal) increased greatly after 2 weeks of storage at room temperature or under refrigerated conditions. These volatile oxidation products may arise as a result of enzymatic activity on unsaturated fatty acids, and was seen to be arrested by freezing the flour.

A survey of the conjugated fatty acids of seed oils

1968 ◽  
Vol 45 (3) ◽  
pp. 176-182 ◽  
Author(s):  
C. Y. Hopkins ◽  
Mary J. Chisholm
Keyword(s):  
Fatty Acids ◽  
Seed Oils ◽  
Conjugated Fatty Acids
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