scholarly journals Analytical Characterization of the Widely Consumed Commercialized Fermented Beverages from Russia (Kefir and Ryazhenka) and South Africa (Amasi and Mahewu): Potential Functional Properties and Profiles of Volatile Organic Compounds

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3082
Author(s):  
Konstantin V. Moiseenko ◽  
Olga A. Glazunova ◽  
Olga S. Savinova ◽  
Betty O. Ajibade ◽  
Oluwatosin A. Ijabadeniyi ◽  
...  
Keyword(s):  
South Africa ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Current Knowledge ◽  
Dietary Recommendations ◽  
Potential Health ◽  
Fermented Beverages ◽  
Volatile Organic ◽  
Health Promoting ◽  
Branched Chain

In this study, four commercialized indigenous fermented beverages most highly consumed in Russia (kefir and ryazhenka) and South Africa (amasi and mahewu) were analyzed for their potential health-promoting properties and flavor-forming volatile organic compounds (VOC). The analysis of antioxidant capacity demonstrated superiority of dairy-based beverages (kefir, ryazhenka and amasi) over the corn-based mahewu; however, mahewu outperformed dairy-based beverages in terms of its potential antihypertensive effect (i.e., the ability to inhibit angiotensin I converting enzyme). The fatty acid (FA) content of kefir and ryazhenka were more diverse compared to that of amasi, but included a lesser amount of branched chain FA. In terms of calculated FA nutritional indices (e.g., indices of atherogenicity and thrombogenicity), kefir and ryazhenka performed similarly and significantly better than amasi. The agreement between beverages theoretical flavor profiles, which was obtained based on the flavors of individual VOC, and consumers’ flavor perception allow hypothesizing about the contribution of detected VOC to the overall products’ flavor. The obtained data expand current knowledge regarding traditional fermented beverages and their values in terms of national dietary recommendations. Additionally, reported VOC profiles will promote the inclusion of traditional fermented beverages into the rations based on the flavor pairing concept (which is controversial but widely applied).

scholarly journals Potential of Passive Sampling and Plant Absorption to Quantify Inhalation Exposure to Volatile Organic Compounds

2020 ◽  
Vol 19 (1) ◽  
pp. 43-56
Author(s):  
Veerapas Na Roi-et ◽  
◽  
Supawat Chaikasem ◽  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Indoor Air Pollution ◽  
Inhalation Exposure ◽  
Hazard Index ◽  
Weighted Average ◽  
Exposure Limits ◽  
Potential Health ◽  
Limit Values ◽  
Volatile Organic

Emission of volatile organic compounds (VOCs) from photocopiers was investigated to assess the potential health impacts on inhalation exposure to VOCs. VOCs samples were collected during working hours using SKC VOCs 575 series passive sample. Twenty-one quantified VOCs were measured and analyzed by GC-MS/MS. The results showed that the total VOCs concentration emitted in the photocopy centers A and B were 2.29×104 and 2.32×104 µg/m3, respectively. The highest detected chemical was trans-1,2-Dichloroethene at about 2.18×104 (photocopy center A) and 2.15×104 µg/m3 (photocopy center B (The results reveal that the non-carcinogenic risk for inhalation exposure to m-Xylene, p-Xylene, and trans-1,2-Dichloroethene were in the range 0.94-1.53 and 1.19-1.79 and 51.54-52.23, respectively, resulting in the hazard index (HI) of non-carcinogenic VOCs in total being greater than 1.0. This indicated that the cumulative effects of inhalation exposure to VOCs at low concentrations should be of concern, even though it does not exceed the occupational exposure limits and Threshold Limit Values-Time Weighted Average for the mixtures (TLV-TWAmix). Plants display a greener solution to reduce indoor air pollution. The bio-concentration levels of total VOCs in Epipremnum aureum were noted as 74.71 to 174.42, signifying that E. aureum is effective for removal of VOCs naturally and sustainably.

Identification of Non-Volatile Components and Volatile Organic Compounds in Wet Building Materials

2012 ◽  
Vol 253-255 ◽  
pp. 825-828
Author(s):  
Jing Chen ◽  
Neng Zhu
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Building Materials ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Acrylic Emulsion ◽  
Volatile Organic ◽  
Pre Treatment ◽  
Branched Chain ◽  
Styrene Butadiene

The major volatile components in two solvent-based paints, two thinners, and four adhesives have been identified by a method involving pre-treatment by solvent dilution, filtration, and gas chromatography-mass spectrometry. The non-volatile components in these wet building materials have been determined by infrared spectroscopy. The results have shown the major volatile organic compounds in one-component polyurethane varnish and alkyd paint thinner to be nonane, decane, undecane, xylene, ethylbenzene and ethyltoluene. The main film-forming matter in cement floor paint has been identified as styrenated acrylic emulsion, with the volatile components being mainly butyl acetate, decane and benzene series. The basic substances in these adhesives were polychloroprene, styrene butadiene carboxylated latex, or polyvinyl acetate emulsion. The primary volatile compounds in two adhesives were methyl acetate, and many branched-chain and normal alkanes, while those in the other two adhesives were toluene and benzene.

Receptor modelling and risk assessment of volatile organic compounds measured at a regional background site in South Africa

2018 ◽  
Vol 172 ◽  
pp. 133-148 ◽  
Author(s):  
Kerneels Jaars ◽  
Mika Vestenius ◽  
Pieter G. van Zyl ◽  
Johan P. Beukes ◽  
Heidi Hellén ◽  
...  
Keyword(s):  
South Africa ◽  
Risk Assessment ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Background Site ◽  
Regional Background ◽  
Receptor Modelling ◽  
Volatile Organic

Essential oils and safety of their use

2020 ◽  
Vol 1 ◽  
pp. 17-38
Author(s):  
Beata Girek ◽  
Małgorzata Deska ◽  
Tomasz Girek
Keyword(s):  
Volatile Organic Compounds ◽  
Essential Oils ◽  
Toxic Effect ◽  
Everyday Life ◽  
Organic Compounds ◽  
Methods Of Analysis ◽  
Volatile Organic ◽  
Health Promoting ◽  
Ancient Times ◽  
A Priority

Currently, many herbal substances are used in everyday life products and in many industry such as food, cosmetics and others. Essential oils are mixtures of volatile organic compounds separated from plants or parts of them. They are characterized by an intense fragrance, but they have a diverse composition. Depending on the source, there are one or several dominant components. History acquisition of essential oils dates back to ancient times. Due to the unique fragrance qualities, the oils accompany humanity all the time. More perfect methods of analysis of the composition of essential oils used in cosmetics, food (spices) and aromatherapy, prompts us to consider the safety of their use. In addition to health-promoting substances, oils can also contain many organic compounds with an allergic or even toxic effect. Getting to know the essential oils composition and thorough acquaintance of consumers with possible risks of using essential oils is currently a priority for the producers of essential oils.

scholarly journals Evaluating In Silico the Potential Health and Environmental Benefits of Houseplant Volatile Organic Compounds for an Emerging ‘Indoor Forest Bathing’ Approach

2021 ◽  
Vol 19 (1) ◽  
pp. 273
Author(s):  
Valentina Roviello ◽  
Pasqualina Liana Scognamiglio ◽  
Ugo Caruso ◽  
Caterina Vicidomini ◽  
Giovanni N. Roviello
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compound ◽  
Organic Compounds ◽  
In Silico ◽  
Health Benefits ◽  
Biogenic Volatile Organic Compounds ◽  
Potential Health ◽  
Forest Bathing ◽  
In Silico Studies ◽  
Volatile Organic

The practice of spending time in green areas to gain the health benefits provided by trees is well known, especially in Asia, as ‘forest bathing’, and the consequent protective and experimentally detectable effects on the human body have been linked to the biogenic volatile organic compounds released by plants. Houseplants are common in houses over the globe and are particularly appreciated for aesthetic reasons as well for their ability to purify air from some environmental volatile pollutants indoors. However, to the best of our knowledge, no attempt has been made to describe the health benefits achievable from houseplants thanks to the biogenic volatile organic compounds released, especially during the day, from some of them. Therefore, we performed the present study, based on both a literature analysis and in silico studies, to investigate whether the volatile compounds and aerosol constituents emitted by some of the most common houseplants (such as peace lily plant, Spathiphyllum wallisii, and iron plant, Aspidistra eliator) could be exploited in ‘indoor forest bathing’ approaches, as proposed here for the first time not only in private houses but also public spaces, such as offices, hospitals, and schools. By using molecular docking (MD) and other in silico methodologies for estimating vapor pressures and chemico-physical/pharmacokinetic properties prediction, we found that β-costol is an organic compound, emitted in appreciable amounts by the houseplant Spathiphyllum wallisii, endowed with potential antiviral properties as emerged by our MD calculations in a SARS-CoV-2 Mpro (main protease) inhibition study, together with sesquirosefuran. Our studies suggest that the anti-COVID-19 potential of these houseplant-emitted compounds is comparable or even higher than known Mpro inhibitors, such as eugenol, and sustain the utility of houseplants as indoor biogenic volatile organic compound emitters for immunity boosting and health protection.

scholarly journals Oxidative stress and volatile organic compounds: interplay in pulmonary, cardio-vascular, digestive tract systems and cancer

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Bogdan Calenic ◽  
Daniela Miricescu ◽  
Maria Greabu ◽  
Andrey V. Kuznetsov ◽  
Jakob Troppmair ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Current Knowledge ◽  
Antioxidant Systems ◽  
Special Focus ◽  
Healthy Humans ◽  
Hydroxyl Anion ◽  
Wide Range ◽  
Volatile Organic

AbstractOxidative stress (OS) can be defined as an imbalance between antioxidant systems and various pro-oxidants. This loss of balance is closely associated with initiation and development of a wide range of systemic or organ specific diseases.Exhaled breath of healthy humans contains a large number of volatile organic compounds (VOCs) derived from cellular metabolism, released by microorganisms or taken up from the environment. Qualitative or quantitative changes in their composition are associated with diseases and various pathological conditions, also characterized by increased production of reactive oxygen species (ROS), such as superoxide radical, hydrogen peroxide, hydroxyl anion, peroxinitrite, etc. Several volatile organic compounds such as ethane and pentane are direct end-products of the reaction of ROS with various biological compounds (e.g., lipid peroxidation, DNA or protein damage). Being able to accurately identify ROS-generated VOCs could be of particular importance in devising sensitive tests that can diagnose and follow-up oxidative stress-related diseases.This review describes current knowledge on the associations between oxidative stress and free radicals and the release of several marker volatile organic compounds in a number of diseases. A special focus will be placed on such VOCs in the cardiovascular pathologies, pulmonary diseases and gastro-intestinal tract affections.

Airborne Volatile Organic Compounds and Their Potential Health Impact on the Vicinity of Petrochemical Industrial Complex

2010 ◽  
Vol 214 (1-4) ◽  
pp. 83-92 ◽  
Author(s):  
Sarawut Thepanondh ◽  
Jarupun Varoonphan ◽  
Panukorn Sarutichart ◽  
Thagoon Makkasap
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Health Impact ◽  
Industrial Complex ◽  
Potential Health ◽  
Volatile Organic
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