The effect of protein products from sesame seeds on the oxidative stability of emulsion products

The nutritional factors and characteristics of sesame (Sesame indicum L.) seeds and extracted oil of six genotypes: G2, G3, G4, G5 and G6 cultivated in Upper Egypt were subjected to comparative evaluation with control (G1), for its genetic diversity, physicochemical properties, fatty acid composition, antioxidant activity and oil oxidative stability (Rancimat test). Estimates of genotypic and phenotypic coefficients of variation revealed high value in seed yield. For heritability estimates, the data showed that four traits out of eight recorded the highest heritability values over of 90%. These traits were oil yield (99.56%), seed yield (98.83%), plant height (96.33%) and seed index (90.03%). Sesame seeds have a high oil content (39.56 to 54.64 g/100g dry weight). The fatty acid profile was varied among the genotypes, in particular oleic acid (37.15 to 46.61%) and linoleic acid (37.49 to 44.33%). Results indicated that G4 has significantly higher in most agricultural traits as well as seed yield, while the G5 was the highest in oil yield and has significantly higher oxidative stability (26.57 h) among the genotypes.

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Effects of roasting conditions of sesame seeds on the oxidative stability of pressed oil during thermal oxidation

Food Chemistry ◽

10.1016/j.foodchem.2009.05.040 ◽

2010 ◽

Vol 118 (3) ◽

pp. 681-685 ◽

Cited By ~ 90

Author(s):

Seung Wook Lee ◽

Min Kyu Jeung ◽

Min Hee Park ◽

Soo Yong Lee ◽

JaeHwan Lee

Keyword(s):

Oxidative Stability ◽

Thermal Oxidation ◽

Sesame Seeds

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Oxidative Stability of Sunflower Oil Supplemented with Medicinal Split Gill Mushroom, Schizophyllum commune Fr.:Fr. Extract during Accelerated Storage

International Journal of Medicinal Mushrooms ◽

10.1615/intjmedmushr.v13.i4.60 ◽

2011 ◽

Vol 13 (4) ◽

pp. 357-368

Author(s):

Hip Seng Yim ◽

Fook Yee Chye ◽

Pei Ying Heng ◽

Chun Wai Ho

Keyword(s):

Oxidative Stability ◽

Sunflower Oil ◽

Schizophyllum Commune ◽

Accelerated Storage

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Experimental Assessment of the Practical Oxidative Stability of Lithium Thiophosphate Solid Electrolytes

10.26434/chemrxiv.8014715.v1 ◽

2019 ◽

Author(s):

Georg Dewald ◽

Saneyuki Ohno ◽

Marvin Kraft ◽

Raimund Koerver ◽

Paul Till ◽

...

Keyword(s):

Cyclic Voltammetry ◽

Solid State ◽

Oxidative Stability ◽

Photoelectron Spectroscopy ◽

Solid Electrolytes ◽

Stability Limit ◽

Lithium Ion ◽

High Energy ◽

Redox Activity ◽

Solid State Batteries

All-solid-state batteries are often expected to replace conventional lithium-ion batteries in the future. However, the practical electrochemical and cycling stability of the best-conducting solid electrolytes, i.e. lithium thiophosphates, are still critical issues that prevent long-term stable high-energy cells. In this study, we use stepwisecyclic voltammetry to obtain information on the practical oxidative stability limit of Li10GeP2S12, a Li2S‑P2S5glass, as well as the argyrodite Li6PS5Cl solid electrolytes. We employ indium metal and carbon black as the counter and working electrode, respectively, the latter to increase the interfacial contact area to the electrolyte as compared to the commonly used planar steel electrodes. Using a stepwise increase in the reversal potentials, the onset potential at 25 °C of oxidative decomposition at the electrode-electrolyte interface is identified. X‑ray photoelectron spectroscopy is used to investigate the oxidation of sulfur(-II) in the thiophosphate polyanions to sulfur(0) as the dominant redox process in all electrolytes tested. Our results suggest that after the formation of these decomposition products, significant redox behavior is observed. This explains previously reported redox activity of thiophosphate solid electrolytes, which contributes to the overall cell performance in solid-state batteries. The stepwise cyclic voltammetryapproach presented here shows that the practical oxidative stability at 25 °C of thiophosphate solid electrolytes against carbon is kinetically higher than predicted by thermodynamic calculations. The method serves as an efficient guideline for the determination of practical, kinetic stability limits of solid electrolytes.

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Experimental Assessment of the Practical Oxidative Stability of Lithium Thiophosphate Solid Electrolytes

10.26434/chemrxiv.8014715 ◽

2019 ◽

Author(s):

Georg Dewald ◽

Saneyuki Ohno ◽

Marvin Kraft ◽

Raimund Koerver ◽

Paul Till ◽

...

Keyword(s):

Cyclic Voltammetry ◽

Solid State ◽

Oxidative Stability ◽

Photoelectron Spectroscopy ◽

Solid Electrolytes ◽

Stability Limit ◽

Lithium Ion ◽

High Energy ◽

Redox Activity ◽

Solid State Batteries

All-solid-state batteries are often expected to replace conventional lithium-ion batteries in the future. However, the practical electrochemical and cycling stability of the best-conducting solid electrolytes, i.e. lithium thiophosphates, are still critical issues that prevent long-term stable high-energy cells. In this study, we use stepwisecyclic voltammetry to obtain information on the practical oxidative stability limit of Li10GeP2S12, a Li2S‑P2S5glass, as well as the argyrodite Li6PS5Cl solid electrolytes. We employ indium metal and carbon black as the counter and working electrode, respectively, the latter to increase the interfacial contact area to the electrolyte as compared to the commonly used planar steel electrodes. Using a stepwise increase in the reversal potentials, the onset potential at 25 °C of oxidative decomposition at the electrode-electrolyte interface is identified. X‑ray photoelectron spectroscopy is used to investigate the oxidation of sulfur(-II) in the thiophosphate polyanions to sulfur(0) as the dominant redox process in all electrolytes tested. Our results suggest that after the formation of these decomposition products, significant redox behavior is observed. This explains previously reported redox activity of thiophosphate solid electrolytes, which contributes to the overall cell performance in solid-state batteries. The stepwise cyclic voltammetryapproach presented here shows that the practical oxidative stability at 25 °C of thiophosphate solid electrolytes against carbon is kinetically higher than predicted by thermodynamic calculations. The method serves as an efficient guideline for the determination of practical, kinetic stability limits of solid electrolytes.

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