Simultaneous prediction of acetic acid/ethanol concentrations in their binary mixtures using metalloporphyrin based opto-electronic nose for meat safety applications

2010 ◽  
Vol 4 (2) ◽  
pp. 51-60 ◽  
Author(s):  
Jayendra K. Amamcharla ◽  
Suranjan Panigrahi
Keyword(s):  
Acetic Acid ◽  
Binary Mixtures ◽  
Electronic Nose ◽  
Meat Safety ◽  
Simultaneous Prediction ◽  
Safety Applications

scholarly journals Analysis of Volatile Components of Auricularia auricula from Different Origins by GC-MS Combined with Electronic Nose

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Lijun Fu ◽  
Gen Yang ◽  
Li Liu ◽  
Yongzheng Ma ◽  
Xiumin Zhang ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Electronic Nose ◽  
Relative Content ◽  
Volatile Components ◽  
Auricularia Auricula ◽  
Edible Fungus ◽  
Odor Activity Value ◽  
Diethyl Azodicarboxylate ◽  
Different Origins ◽  
High Degree

Auricularia auricula is a kind of nutrient-rich edible fungus, which has the reputation of “king of vegetarians.” In this paper, the electronic nose combined with GC-MS technology was used to analyze the volatile components of A. auricula in Heilongjiang, Jilin, Shanghai, and Sichuan provinces to investigate the differences and characteristics of A. auricula in different origins. The results showed that the electronic nose could obviously distinguish the samples from Jilin and Shanghai with a high degree of discrimination, while it was inappropriate to distinguish the samples from Heilongjiang and Sichuan Province. GC-MS was used to further analyze the volatile compounds in A. auricula qualitatively and quantitatively. The results showed that 98 volatile components were detected and 23 of them were common components, including alcohols, aldehydes, acids, esters, hydrocarbons, and other volatile components. The relative content of acetic acid and diethyl azodicarboxylate in A. auricula from the four origins was relatively high. According to the relative odor activity value (ROAV), it was found that the key compounds that caused the aroma difference between different origins were 1-octene-3-ol, cis-3-nonene-1-ol, (E)-2-octenal, (E)-2-nonenal, (E,E)-2,4-nonadienal, and 3-methyl butanal.

Excess Gibbs energy for binary mixtures of acetonitrile with acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid

1991 ◽  
Vol 69 (12) ◽  
pp. 2117-2121 ◽  
Author(s):  
T. S. Banipal ◽  
B. S. Lark ◽  
S. Singh
Keyword(s):  
Acetic Acid ◽  
Gibbs Energy ◽  
Carboxylic Acids ◽  
Propionic Acid ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Excess Gibbs Energy ◽  
Composition Range ◽  
Isobutyric Acid ◽  
Dimerization Constant

Total vapour pressures for binary mixtures containing acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid with acetonitrile have been measured for the entire composition range at 298.15 and 318.15 K using a static manometric method. All systems show positive deviations from Raoult's law, enhanced by both an increase in temperature and an increase in the methylation of acetic acid. Activity coefficients have been calculated by taking into consideration the dimerization of these carboxylic acids in the vapour phase. TSE values obtained from GE and earlier reported HE values are found to be negative for acetic acid, about zero for propionic and isobutyric acids, and positive for trimethylacetic acid for the whole composition range. The results have been interpreted in terms of various contributions such as depolymerization, heteromolecular dipole–dipole interactions, and the increasing dimerization constant and steric hindrance with increase of complexity of the acid. Key words: excess Gibbs energy, carboxylic acids, acetonitrile, activity coefficients

Surface Tension ofo-Xylene + Acetic Acid andm-Xylene + Acetic Acid Binary Mixtures from 303.15 K to 343.15 K

2007 ◽  
Vol 52 (2) ◽  
pp. 454-457 ◽  
Author(s):  
Zhiqiang Chen ◽  
Peisheng Ma ◽  
Shuqian Xia ◽  
Dongxia Yin
Keyword(s):  
Surface Tension ◽  
Acetic Acid ◽  
Binary Mixtures

Kinematic viscosities of acetone, vinyl acetate, crotonaldehyde, acetic acid, acetic anhydride and their binary and ternary mixtures

1983 ◽  
Vol 48 (12) ◽  
pp. 3508-3516
Author(s):  
Pavol Škubla ◽  
Walter Waradzin
Keyword(s):  
Acetic Acid ◽  
Acetic Anhydride ◽  
Temperature Dependence ◽  
Vinyl Acetate ◽  
Binary Mixtures ◽  
Ternary Mixtures ◽  
Exponential Form ◽  
Binary And Ternary Mixtures

Kinematic viscosities of acetone, vinyl acetate, crotonaldehyde, acetic acid, acetic anhydride, their binary mixtures and two ternary mixtures (acetone-vinyl acetate-acetic acid and vinyl acetate-acetic acid-acetic anhydride) were measured. The values of coefficients of the Linke, McAllister, and Chandramouli-Laddha equations were calculated. The temperature dependence of the coefficients of last two equations can be expressed in terms of a function in exponential form, coefficients of which are tabulated.

Pycnometric determination of densities and excess volumes of binary mixtures containing at least one associating component

1990 ◽  
Vol 55 (10) ◽  
pp. 2395-2403 ◽  
Author(s):  
Kamila Chýlková ◽  
Ivona Malijevská
Keyword(s):  
Acetic Acid ◽  
Propionic Acid ◽  
Binary Mixtures ◽  
Trifluoroacetic Acid ◽  
Excess Volume ◽  
Excess Volumes ◽  
Molar Excess ◽  
Molar Excess Volumes

Densities at 20 °C and molar excess volumes calculated from them are reported in the work for the mixtures of the substances: propionic acid-n-heptane, propionic acid-benzene, trifluoroacetic acid-benzene, propionic acid-cyclohexane, acetic acid-cyclohexane, acetic acid-trifluoroacetic acid, acetic acid-propionic acid, and propionic acid-trifluoroacetic acid. For the last system mentioned, a strange dependence of excess volume on composition was found which is noted for three local extremes. The dependences of excess volume on composition are correlated by the Redlich-Kister polynomial.

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