Production of biofuel precursor molecules (mono-carboxylic acids, biohydrogen) from apple and pumpkin waste through anaerobic fermentation process

2021 ◽  
Author(s):  
Venkateswer Reddy Motakatla ◽  
Young-Cheol Chang
Keyword(s):  
Fatty Acids ◽  
Carboxylic Acids ◽  
Fermentation Process ◽  
Corrosion Inhibitors ◽  
Anaerobic Fermentation ◽  
Medium Chain ◽  
Medium Chain Fatty Acids ◽  
Precursor Molecules ◽  
Chain Fatty Acids

Medium chain fatty acids (MCFA) such as caproic, heptanoic, and caprylic acids are mono-carboxylic acids, which can be used as precursor molecules to synthesize biodiesel, bioplastics, antimicrobials, and corrosion inhibitors....

Esterase activity and release of ethyl esters of medium-chain fatty acids by Saccharomyces cerevisiae during anaerobic growth

1998 ◽  
Vol 44 (12) ◽  
pp. 1171-1176 ◽  
Author(s):  
Laura Bardi ◽  
Cristina Crivelli ◽  
Mario Marzona
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Fatty Acids ◽  
Ethyl Ester ◽  
Anaerobic Fermentation ◽  
Ethyl Esters ◽  
Anaerobic Growth ◽  
Ester Synthesis ◽  
Medium Chain ◽  
Medium Chain Fatty Acids ◽  
Chain Fatty Acids

During anaerobic fermentation, Saccharomyces cerevisiae releases large amounts of medium-chain fatty acids (MCFAs) and related ethyl esters which are very important for aromatic quality of fermented beverages. The physiological function of ester synthesis is not yet understood. As MCFAs are toxic, their conversion to esters has been proposed to be a detoxification mechanism. Esterases possess ester synthesizing ability. Throughout an anaerobic fermentation of a lipid-free synthetic medium carried out with a S. cerevisiae strain selected for wine making, we have monitored MCFA and ethyl ester production and, at the same time, measured growth and esterasic activity of intact cells. Because no correlation was found between the concentration of each fatty acid and its ethyl ester, there is no evidence that ester synthesis reduces the toxicity of MCFAs. Esterasic activity did not show any correlation with ester synthesis, but it was related to the release of MCFAs. A model is proposed in which ester synthesis is a consequence of the arrest of lipid biosynthesis resulting from a lack of oxygen. Under these conditions, an excess of acyl coenzyme A is produced, and acyl esters are formed as secondary products of reactions aimed at recovering free coenzyme A.Key words: yeast, esterase, medium-chain fatty acids, toxicity, ethyl esters.

Enhanced Bioavailability of Curcumin Nanoemulsions Stabilized with Phosphatidylcholine Modified with Medium Chain Fatty Acids

2017 ◽  
Vol 14 (3) ◽  
pp. 377-385 ◽  
Author(s):  
Angelica A. Ochoa-Flores ◽  
Josafat A. Hernández-Becerra ◽  
Adriana Cavazos-Garduño ◽  
Ida Soto-Rodríguez ◽  
Maria Guadalupe Sanchez-Otero ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Medium Chain ◽  
Medium Chain Fatty Acids ◽  
Chain Fatty Acids

scholarly journals Effects of ketogenic diet containing medium-chain fatty acids on serum inflammatory factor and mTOR signaling pathway in rats

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Huan Liu ◽  
Jingwei Huang ◽  
Hui Liu ◽  
Feng Li ◽  
Quansheng Peng ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Caloric Restriction ◽  
Ketogenic Diet ◽  
Mtor Pathway ◽  
Inflammatory Factor ◽  
Medium Chain ◽  
Medium Chain Fatty Acids ◽  
Sd Rats ◽  
Anti Inflammatory ◽  
Chain Fatty Acids

Abstract Background The ketogenic diet (KD) can promote the anti-inflammatory metabolic state and increase ketone body level in rats. This study was to explore the effects and differences of KD with or without medium-chain fatty acids (MCFAs) on serum inflammatory factors and mTOR pathway in Sprague–Dawley (SD) rats. Results Male SD rats were assigned to five groups: control diet (C), 20% caloric restriction diet (LC), 20% caloric restriction ketogenic diet (containing MCFAs) (LCKD1), 20% caloric restriction ketogenic diet (LCKD2) and 20% caloric restriction foreign ketogenic diet (LCKD3), and fed for 30 d. LC and KD could significantly reduce the body weight of rats; LC and KD containing MCFAs showed anti-inflammatory effects; KD without MCFAs decreased the concentration of mTOR1, while KD containing MCFAs decreased the expression of AMPK, mtor1 and P70sk. Conclusions KD containing MCFAs showed better effects on the mTOR pathway and anti-inflammation than that without MCFAs.

Sign in / Sign up

Export Citation Format

Share Document