scholarly journals Fatty Acids, Volatile and Sensory Profile of Multigrain Biscuits Enriched with Spent Malt Rootles

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 442 ◽  
Author(s):  
Maria Simona Chiş ◽  
Anamaria Pop ◽  
Adriana Păucean ◽  
Sonia Ancuța Socaci ◽  
Ersilia Alexa ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Methyl Esters ◽  
Score Test ◽  
Essential Amino Acids ◽  
Aroma Compounds ◽  
Raw Material ◽  
Sensory Profile ◽  
Optimum Level ◽  
Brewing Industry ◽  
Derivatives Of

Spent malt rootlets, a by-product of the brewing industry, are a rich source of protein, essential amino acids, healthy fats, polyphenols and minerals, and could be a new promising type of raw material from the nutritional, economic, sensory, and technical perspectives. However, their specific aroma profile could limit their addition in baked products. The aim of this work was to study the effect of spent malt rootlets addition on volatile derivatives of enriched biscuits in relation to their sensory profile. For this purpose, spent malt rootlets and enriched biscuits (0–25% spent malt rootlets added) were analyzed by GC-MS techniques, in order to obtain their fatty acids methyl esters and volatile compounds profile, while for the sensory analysis a nine-point hedonic score test was used. The results of this study reveal the fatty acids and volatile profile of spent malt rootlets and of the enriched biscuits with spent malt rootlets pointing out the contribution of fatty acids to the generation of aroma compounds. The influence of different aroma compounds on the consumer’s preferences was studied and the optimum level addition of spent malt rootlets in multigrain biscuits was found to be 15%.

Effect of unrefined crude glycerol composition on the properties of polyurethane foams

2017 ◽  
Vol 54 (3) ◽  
pp. 633-649 ◽  
Author(s):  
Nuno V Gama ◽  
Belinda Soares ◽  
Carmen SR Freire ◽  
Rui Silva ◽  
Artur Ferreira ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Crude Glycerol ◽  
Mechanical Performance ◽  
Methyl Esters ◽  
Thermomechanical Properties ◽  
Polyurethane Foams ◽  
Raw Material ◽  
Two Samples ◽  
Pre Treatment ◽  
The Impact

The aim of this study is to evaluate the possibility of using unrefined crude glycerol (CG), a byproduct of the biodiesel industry, in the production of polyurethane foams. In order to assess the suitability of this raw material for the production of polyurethane foams, two samples of crude glycerol with different compositions in glycerol, fatty acids, and methyl esters were used directly, without any pretreatment or purification. Additionally, one of these samples was also submitted to a pre-treatment step in order to evaluate the advantage of purifying the raw material and, for comparison, pure glycerol was also used to prepare polyurethane foams. Both chemical and structural characterizations of the produced foams, as well as the thermomechanical properties determined, showed that unrefined crude glycerol is a suitable ecopolyol for the production of polyurethane foams. Although the presence of fatty acids and esters affects their mechanical performance, this issue can be explored to tune the properties of the ensuing polyurethane foams. Furthermore, the evaluation of the impact of using unrefined CG on the sustainability of polyurethane foams production yielded promising results.

Preparation of some long-chain N-acyl derivatives of essential amino acids for nutritional studies

1980 ◽  
Vol 58 (7) ◽  
pp. 573-576 ◽  
Author(s):  
Alenka Paquet
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Physical Properties ◽  
Essential Amino Acids ◽  
Nutritional Studies ◽  
Derivatives Of ◽  
Acyl Derivatives ◽  
Long Chain

Long-chain N-acyl derivatives of methionine, tryptophan, threonine, and lysine (N6) have been obtained by the reaction of succinimidyl esters of fatty acids with the unprotected amino acids. Their physical properties have been characterized.

scholarly journals Biochemical composition of two giant pill-millipedes of the Western Ghats of India

2015 ◽  
Vol 52 (1-2) ◽  
pp. 45-61 ◽  
Author(s):  
Cheviri N. Ambarish ◽  
Kandikere R. Sridhar
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Western Ghats ◽  
Unsaturated Fatty Acids ◽  
Essential Fatty Acids ◽  
Methyl Esters ◽  
Essential Amino Acids ◽  
Essential Elements ◽  
Western Ghats Of India ◽  
The Western Ghats

AbstractMany invertebrates have an unexpected nutraceutical potential and are of nutritional or ethnomedicinal significance to many tribals throughout the world. The giant pill-millipedes of the genus Arthrosphaera are traditionally used as natural medicines by tribals in the Western Ghats of India. In this study, two species of pill-millipedes (Arthrosphaera fumosa and A. magna) were subjected to proximate and biochemical analysis to ascertain their nutritional potential. Bodies of A. fumosa and A. magna (after removal of their intestines) had a low protein content (8-15%) and high quantity of carbohydrates (40-41%). They were rich in many essential elements, especially in calcium. The essential amino acids of pillmillipedes were in high quantities. The level of glycine was the highest, followed by lysine and serine. The fatty acid methyl esters (FAMEs) of males and females consist of high quantities of unsaturated fatty acids. The mono-unsaturated fatty acids were more abundant than poly-unsaturated fatty acids. Palmitic and oleic acids were dominant saturated and unsaturated fatty acids, respectively. The study has revealed for the first time that pill-millipedes of the Western Ghats of India constitute a good source of essential minerals, essential fatty acids, and essential amino acids. Being valuable contributors of organic manure by processing recalcitrant plant lignocellulosic wastes, pill-millipedes become part and parcel of organic farming as well as future nutraceutical sources.

King Crab Wastes Potential as the Technological Valuable Raw Materials

Food Industry ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 30-36 ◽  
Author(s):  
Svetlana Maksimova ◽  
Denis Poleschuk ◽  
Elena Surovtseva ◽  
Kseniya Vereshchagina ◽  
Alexei Milovanov
Keyword(s):  
Fatty Acids ◽  
Acid Composition ◽  
Raw Materials ◽  
Essential Amino Acids ◽  
Raw Material ◽  
King Crab ◽  
Research Results ◽  
Industrial Processing ◽  
The North ◽  
Iron And Zinc

The article presents the technological potential research results of secondary resources formed in the King crab cutting process for food purposes. The authors analyzed waste (cephalothorax and abdomen) obtained from the King crab industrial processing from the North Okhotsk sea subzone and Primorye subzone. They determined the size and mass characteristics of waste. There is the shell, viscera (including liver), gills and abdominals ratio. A man examined the ratio of mineral (shell) and protein (interior and gills) parts of the studied waste experimentally. The research aim was to determine the total chemical composition, amino acid composition of proteins, fatty acid composition of lipids and mineral composition of the combined waste. The authors revealed that the secondary raw materials under the experiment consisted of the protein by 13.37 ± 0.05 %, lipids by 2.68 ± 0.1 %, minerals by 8.33 ± 0.25 % and carbohydrate compounds by 4.22 ± 0.05 %. The experiment determined the essential amino acids sum in the protein part. Valine, leucine and cysteine are limiting. Fatty acids in lipids waste are represented by polyunsaturated fatty acids in significant amounts (42.11 %). Calcium and sodium are overwhelming macronutrients in the waste from the King crab cutting, while iron and zinc are dominating microelements. The research results indicate the high technological value of waste from King crab cutting and the potential of this secondary raw material as a basis for the production of biologically valuable protein and mineral products.

scholarly journals Gas chromatographic characterization of mycobacteria: analysis of fatty acids and trifluoroacetylated whole-cell methanolysates

1976 ◽  
Vol 3 (2) ◽  
pp. 81-85
Author(s):  
L Larsson ◽  
P A Mårdh
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Methyl Esters ◽  
Gas Liquid Chromatography ◽  
Whole Cell ◽  
Chromatographic Characterization ◽  
Different Strains ◽  
Derivatives Of ◽  
Potential Tool

Mycobacterium avium, M. bovis strain Bacillus Calmette-Guerin (BCG), M. kansasii, and M. tuberculosis were studied by gas-liquid chromatography. Methylated fatty acids of the mycobacterial lipids and trifluoroacetyl (TFA) derivatives of whole-cell methanolysates were analyzed. Both the fatty acid and the TFA chromatograms showed reproducible differences between the various mycobacteria studied. Chromatograms from different strains of one and the same species showed negligible differences. Fatty acid methyl esters and TFA methyl glycosides are probably the main constituents of the TFA chromatograms. TFA derivatives are easily prepared and the method provides a potential tool for species indentification of mycobacteria.

scholarly journals High Epoxidation Yields of Vegetable Oil Hydrolyzates and Methyl Esters by Selected Fungal Peroxygenases

2021 ◽  
Vol 8 ◽  
Author(s):  
Alejandro González-Benjumea ◽  
Gisela Marques ◽  
Owik M. Herold-Majumdar ◽  
Jan Kiebist ◽  
Katrin Scheibner ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Methyl Esters ◽  
Saturated Fatty Acids ◽  
Industrial Applications ◽  
Monooxygenase Activity ◽  
Acidic Conditions ◽  
Oil Hydrolysis ◽  
Derivatives Of ◽  
Environmentally Friendly Production

Epoxides of vegetable oils and free and methylated fatty acids are of interest for several industrial applications. In the present work, refined rapeseed, sunflower, soybean, and linseed oils, with very different profiles of mono- and poly-unsaturated fatty acids, were saponified and transesterified, and the products treated with wild unspecific peroxygenases (UPOs, EC 1.11.2.1) from the ascomycete Chaetomium globosum (CglUPO) and the basidiomycete Marasmius rotula (MroUPO), as well as with recombinant UPO of the ascomycete Humicola insolens (rHinUPO), as an alternative to chemical epoxidation that is non-selective and requires strongly acidic conditions. The three enzymes were able of converting the free fatty acids and the methyl esters from the oils into epoxide derivatives, although significant differences in the oxygenation selectivities were observed between them. While CglUPO selectively produced “pure” epoxides (monoepoxides and/or diepoxides), MroUPO formed also hydroxylated derivatives of these epoxides, especially in the case of the oil hydrolyzates. Hydroxylated derivatives of non-epoxidized unsaturated fatty acids were practically absent in all cases, due to the preference of the three UPOs selected for this study to form the epoxides. Moreover, rHinUPO, in addition to forming monoepoxides and diepoxides of oleic and linoleic acid (and their methyl esters), respectively, like the other two UPOs, was capable of yielding the triepoxides of α-linolenic acid and its methyl ester. These enzymes appear as promising biocatalysts for the environmentally friendly production of reactive fatty-acid epoxides given their self-sufficient monooxygenase activity with selectivity toward epoxidation, and the ability to epoxidize, not only isolated pure fatty acids, but also complex mixtures from oil hydrolysis or transesterification containing different combinations of unsaturated (and saturated) fatty acids.

scholarly journals Research of fatty and organic acids in Rhododendron luteum Sweet leaves

2021 ◽  
pp. 63-70
Author(s):  
Т. М. Гонтова ◽  
В. П. Гапоненко ◽  
В. В. Машталер ◽  
О. С. Мала ◽  
М. А. Кулагіна
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Organic Acids ◽  
Saturated Fatty Acids ◽  
Mass Spectrometric ◽  
Raw Material ◽  
Gas Chromatography Mass Spectrometry ◽  
Quantitative Content ◽  
Mass Spectrometric Detector ◽  
Derivatives Of

Rhododendron luteum Sweet of the Heath family Ericaceae is found on the territory of Ukraine both in the wild and is widely cultivated in botanical gardens, parks, squares. Leaves and inflorescences are used to treat heart disease, rheumatism, gout, and disorders of the nervous system. The literature data on the chemical composition relate to the presence of aminoacids, organic acids, essential oils, phenolic and triterpene compounds, andromedol derivatives. The aim of the work was to determine the composition and content of fatty and organic acids in the Rhododendron luteum Sweet leaves by gas chromatography-mass spectrometry. The object of the study was the leaves of Rhododendron luteum Sweet, collected on the territory of the botanical garden of H. S. Skovoroda Kharkiv National Pedagogical University in 2019. Gas chromatography - mass spectrometric study of the component composition and content of fatty and organic acids in the leaves of the studied plant on an Agilent Technologies 6890 chromatograph with a 5973 mass spectrometric detector was carried out. In Rhododendron luteum Sweet leaves 37 substances were found and identified. Fatty acids were represented by 17 compounds. Among saturated fatty acids, palmitic acid (3 276.2 mg/kg) was prevailed, among monounsaturated – oleic (736.78 mg/kg), among polyunsaturated – linolenic (1 617.65 mg/kg). The smallest amounts contained heneukocylic (46.33 mg/kg), lauric (58.17 mg/kg) and caproic (68.17 mg/kg) acids, which belong to saturated fatty acids. The presence of 20 organic acids in the raw material was also established: citric (8 680.30 mg/kg) and iso-citric (4 106.85 mg/kg) acids dominated in terms of quantitative content; oxalic (1 685.65 mg/kg) and malic (1 310.82 mg/kg) acids were contained in significant amounts. Among the derivatives of hydroxybenzoic acid, the greatest amount was presented by gentisic (187.76 mg/kg) acid, among the derivatives of hydroxycinnamic acids – p-coumaric (312.62 mg/kg). For the first time, the qualitative composition and quantitative content of fatty and organic acids in Rhododendron luteum Sweet leaves was studied by gas chromatography with a mass spectrometric detector. The obtained results indicate the prospects for further study of raw materials to develop drugs with membrane stabilizing and anti-inflammatory activity.

STUDIES ON THE IN VITRO ANTITUMOR ACTIVITY OF FATTY ACIDS: VI. DERIVATIVES OF MONO- AND DI-CARBOXYLIC AND UNSATURATED FATTY ACIDS

1962 ◽  
Vol 40 (10) ◽  
pp. 1367-1373 ◽  
Author(s):  
Susan Tolnai ◽  
Joseph F. Morgan
Keyword(s):  
Fatty Acids ◽  
Antitumor Activity ◽  
Mammary Carcinoma ◽  
Unsaturated Fatty Acids ◽  
Methyl Esters ◽  
Ehrlich Carcinoma ◽  
Neutral Ph ◽  
Derivatives Of

Previous studies on the in vitro antitumor activity of saturated and unsaturated fatty acids have been extended to a series of hydroxy and keto derivatives and methyl esters of fatty acids. All compounds were tested against the ascites forms of the Ehrlich carcinoma, the Gardner lymphosarcoma, and the TA3 mammary carcinoma. Marked differences between the antitumor activity of the parent compounds and those of the substituted derivatives were observed. Most consistent in vitro antitumor activity was shown at both acid and neutral pH levels by the keto-derivatives of unsaturated fatty acids.

Synthesis of aroma compounds by apples supplied with alcohols and methyl esters of fatty acids

1985 ◽  
Vol 36 (7) ◽  
pp. 567-574 ◽  
Author(s):  
Ian M. Bartley ◽  
Paul G. Stoker ◽  
Andrew D. E. Martin ◽  
Stephen G. S. Hatfield ◽  
Michael Knee
Keyword(s):  
Fatty Acids ◽  
Methyl Esters ◽  
Aroma Compounds
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