Stabilisation of biofuels with hydrophilic, natural antioxidants solubilised by glycerol derivatives

Kerkel, Florian; Brock, Damian; Touraud, Didier; Kunz, Werner

doi:10.1016/j.fuel.2020.119055

Cited by 18 publications

(7 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bioactive properties are affected by the size and polarity of the molecules, as well as the modification of the polarity of the substituents on the aromatic ring [ 51 ]. All acids with hydroxyl groups on the aromatic ring are highly active, therefore hydroxycinnamic acids are more active than hydroxybenzoic acids [ 52 ]. In the case of hydroxycinnamic acids, ferulic acid exhibits a higher antioxidant activity than p-coumaric acid.…”

Section: Resultsmentioning

confidence: 99%

Processing of Distillery Stillage to Recover Phenolic Compounds with Ultrasound-Assisted and Microwave-Assisted Extractions

Mikucka

Zielińska

Bułkowska

et al. 2022

IJERPH

View full text Add to dashboard Cite

This study investigated the effect of ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) conditions (extraction time, acetone concentration, solid-to-solvent ratio) on the efficiency of polyphenol recovery from distillery stillage and antioxidant activity of the extracts. The highest total polyphenol content, flavonoid content, and phenolic acid content were obtained with 10-min UAE and 5-min MAE at a solid-to-acetone ratio of 1:15 (w:v). Recovery yield was the highest with an aqueous solution of 60% acetone, confirming the results of Hansen Solubility Parameter analysis. Although UAE resulted in approximately 1.2 times higher extraction yield, MAE showed a better balance between extraction yield and energy consumption exhibited by its 3-fold higher extraction rate than that of UAE. Content of total polyphenols and phenolic acids strongly correlated with antioxidant activity, indicating that these compounds provide a substantial contribution to the bioactive properties of the extracts. Six phenolic acids were extracted, predominately ferulic and p-coumaric acids, and free forms of these acids constituted 91% of their total content, which opens various possibilities for their application in the food, cosmetics, and pharmaceutical industries.

show abstract

Section: Resultsmentioning

confidence: 99%

Processing of Distillery Stillage to Recover Phenolic Compounds with Ultrasound-Assisted and Microwave-Assisted Extractions

Mikucka

Zielińska

Bułkowska

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…Before starting the successive frying cycles, the rosemary extract was tested with a Rapidoxy (Anton Paar, Austria brand), an instrument that measures oxidation stability under accelerated conditions (Kerkel et al, 2021), conforming to standard methods ASTM D7525 (American Society for Testing and Materials, 2019) and EN 16091 (European Committee for Standardization, 2012). To verify the rosemary extract's effectiveness, sunflower oil was treated with this extract compared to tocopherol using two doses 600 and 800 ppm of each.…”

Section: Frying Oil Oxidation Kineticsmentioning

confidence: 99%

“…The measuring principle is based on an artificial acceleration of the oil oxidation process by using high temperature and excess pure oxygen (European Committee for Standardization, 2012; American Society for Testing and Materials, 2019; Kerkel et al, 2021). When oxygen is consumed by the sample, the pressure decreases accordingly.…”

Section: Preliminary Accelerated Oxidation Test: Rapidoxymentioning

confidence: 99%

Antioxidant effect of natural rosemary on the oxidation of mid-oleic sunflower frying oil on chicken wings

et al. 2022

View full text Add to dashboard Cite

Fried foods are hugely popular and very much a part of our modern cuisine. Guarding against oxidation is crucial, due to the absorption of oil during the frying process. This paper presents how, the degree of resistance of sunflower oil was evaluated during repeated fries of chicken wings by adding the natural antioxidant extracted from rosemary. It was compared to tocopherol and to a control sample. A preliminary test of accelerated aging demonstrated the effectiveness of rosemary extract by using the Rapidoxy technique on sunflower oil. This proved that the adequate dose of this antioxidant should be 600 ppm. Many physicochemical transformations were inflicted on the oil during its oxidation. The kinetics monitoring of this phenomenon was determined by measuring the total polar materials (TPM), free fatty acids (FFA), and the peroxide index (PI). The obtained results showed that all the parameters analysed tended to increase over time. However, the effect of the rosemary antioxidant was positive on the stability of the oil and the slowing down of its oxidation. Moreover, its efficiency was higher than tocopherol. Rosemary antioxidants could be a safer alternative to synthetic antioxidants which represent toxicological risks, such as buthylated hydroxyanisole BHA, buthylated hydroxytoluene BHT, and tert-butylhydroquinone TBHQ.

show abstract

“…The BDEs of the respective phenol bonds correlate with the antioxidant effect of these compounds. It was found that phenols with low BDE values lead to clearly higher stabilizations [ 125 ]. Mildbone with lower IC50 and BDE had greater antioxidant effects than mildbenone [ 55 ].…”

Section: Molecular Mechanisms Of Anti-inflammatory Activity Of Thementioning

confidence: 99%

“…Hydroxy groups (–OH) represent EDG and therefore lead to lower BDE values. This makes it clear that high antioxidant activity is mainly related to the number and positions of OH groups located in ring B [ 125 , 126 ]…”

Section: Molecular Mechanisms Of Anti-inflammatory Activity Of Thementioning

confidence: 99%

Promising Antioxidant Activity of Erythrina Genus: An Alternative Treatment for Inflammatory Pain?

Cabrera

Bautista

Velázquez

et al. 2020

IJMS

View full text Add to dashboard Cite

The negative impact that oxidative stress has on health is currently known. The complex mechanism of free radicals initiates a series of chain reactions that contribute to the evolution or development of different degenerative disorders. Likewise, these disorders are usually accompanied by inflammatory processes and, therefore, pain. In this sense, reactive oxygen species (ROS) have been shown to promote the nociceptive process, but effective treatment of pain and inflammation still represents a challenge. Over time, it has been learned that there is no single way to relieve pain, and as long as there are no other alternatives, the trend will continue to apply multidisciplinary management, such as promote the traditional use of the Erythrina genus to manage pain and inflammation. In this sense, the Erythrina genus produces a wide range of secondary metabolites, including flavanones, isoflavones, isoflavones, and pterocarpans; these compounds are characterized by their antioxidant activity. Phenolic compounds have demonstrated their ability to suppress pro-oxidants and inhibit inflammatory signaling pathways such as MAPK, AP1, and NFκB. Although there is preclinical evidence supporting its use, the pharmacological effect mechanisms are not entirely clear. Nowadays, there is a fast advancement in knowledge of the disciplines related to drug discovery, but most of nature’s medicinal potential has not yet been harnessed. This review analyzes the decisive role that the Erythrina genus could play in managing inflammatory pain mediated by its compounds and its uses as an antioxidant.

show abstract

Stabilisation of biofuels with hydrophilic, natural antioxidants solubilised by glycerol derivatives

Cited by 18 publications

References 50 publications

Processing of Distillery Stillage to Recover Phenolic Compounds with Ultrasound-Assisted and Microwave-Assisted Extractions

Processing of Distillery Stillage to Recover Phenolic Compounds with Ultrasound-Assisted and Microwave-Assisted Extractions

Antioxidant effect of natural rosemary on the oxidation of mid-oleic sunflower frying oil on chicken wings

Promising Antioxidant Activity of Erythrina Genus: An Alternative Treatment for Inflammatory Pain?

Contact Info

Product

Resources

About