15 results match your criteria color Δe

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The Composition, Physicochemical Properties, Antioxidant Activity, and Sensory Properties of Estonian Honeys.

Foods 2021 Mar 1;10(3). Epub 2021 Mar 1.

Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia.

Thirty honey samples from different regions of Estonia were investigated to determine the chemical compositions, physicochemical properties, bioactive compounds, and sensory characteristics of typical honeys from a northern climate. The physicochemical parameters, such as electrical conductivity, moisture content, free acidity, hydroxymethylfurfural, diastase, and invertase activity were measured. The color was measured and expressed by L*-, a*-, and b*-coordinates. Read More

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Investigation of physicochemical, nutritional, and sensory qualities of muffins incorporated with dried brewer's spent grain flours as a source of dietary fiber and protein.

J Food Sci 2020 Nov 10;85(11):3943-3953. Epub 2020 Oct 10.

Department of Food Science and Technology, Oregon State University, Corvallis, Oregon, 97331, USA.

Brewers' spent grain (BSG) is the major byproduct of brewing beer, rich in protein and dietary fiber. This study investigated the effect of two drying methods (impingement and hot-air drying) on chemical composition, physicochemical properties, and bioactive compounds of BSGs from three different brewers (BSG1, BSG2, and BSG3), and then evaluated the quality and consumer acceptance of BSG flour fortified muffins. Results showed that impingement drying led to significantly lower moisture content (MC, 1. Read More

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November 2020

Phytochemical Components and Bioactivity Assessment among Twelve Strawberry ( L.) Genotypes Growing in Morocco Using Chemometrics.

Foods 2020 Sep 23;9(10). Epub 2020 Sep 23.

Laboratory of Bioprocess and Bio-interfaces, Faculty of Science and Technics, University Sultan Moulay Slimane, BO 523 Beni-Mellal, Morocco.

There are not many exhaustive works emphasizing the amount of genetic diversity among the strawberry tree (Arbutus unedo L) genotypes in Morocco. This work aims to assess the biochemical composition of strawberry tree fruits, as well as to establish the variation of this composition among them. In this study, total phenols (TP), total flavonoids (TF), condensed tannins (CT) and hydrolyzable tannins (HT), total anthocyanins (TA), and free radical scavenging activity through ABTS were investigated in strawberry tree fruits. Read More

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September 2020

Chiral recognition and enantiomer excess determination based on emission wavelength change of AIEgen rotor.

Nat Commun 2020 01 9;11(1):161. Epub 2020 Jan 9.

Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.

Chiral recognition, such as enantioselective interactions of enzyme with chiral agents, is one of the most important issues in the natural world. But artificial chiral receptors are much less efficient than natural ones. For tackling the chiral recognition and enantiomer excess (ee) analysis, up until now all the fluorescent receptors have been developed based on fluorescence intensity changes. Read More

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January 2020

Fruit phytochemical composition and color parameters of 21 accessions of five Rosa species grown in North West Iran.

J Sci Food Agric 2019 Oct 16;99(13):5740-5751. Epub 2019 Jul 16.

Research Department of Chromatography, Iranian Academic Center for Education, Culture and Research (ACECR), Urmia, Iran.

Background: The genus Rosa comprises economically important horticultural plants belonging to the family Rosaceae. Recently, the use of different Rosa species has increased owing to their multipurpose properties (ornamental, food and medicinal uses). In this study, 21 accessions of Rosa genotypes were compared for fruit phytochemical composition and color parameters. Read More

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October 2019

Evaluation of secondary metabolites, antioxidant activity, and color parameters of Nepali wines.

Food Sci Nutr 2018 Nov 10;6(8):2252-2263. Epub 2018 Oct 10.

Center for Analytical Sciences Kathmandu Institute of Applied Sciences Kathmandu Nepal.

We evaluated the quality of wines produced in Nepal in terms of phenolic, flavonoid, anthocyanin and tannin content, antioxidant capacity, and color parameters using spectrophotometric methods. The total phenolic content, total flavonoid content, and total antioxidant activities in Nepali wines ranged from 85.5 to 960. Read More

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November 2018

Formulation and evaluation of gels containing coconut kernel extract for topical application.

Asian J Pharm Sci 2018 Sep 31;13(5):415-424. Epub 2018 Jan 31.

Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Silpakorn University, 6 Rachamankra Road, Ampur Mueng, Nakhon Pathom 73000, Thailand.

The biological activity of coconut ( L.) extracts from its kernels and various parts was reported by many previous studies, it is therefore believable that the extracts of its kernels might show some activities in topical formulations. Among several kernel extracts, the TC06 extract prepared by soaking the steamed coconut kernels in hot water showed the highest total phenolic content (6. Read More

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September 2018

Total Phenolics, Total Anthocyanins, Antioxidant and Pro-oxidant Activity of Some Red Fruits Teas.

Acta Chim Slov 2016 ;63(2):213-9

Fruits represent one of the main dietary sources of bioactive compounds. Due to their remarkable health benefits, many functional foods of fruit origin, including fruit teas, are present on the market and there is an increased interest regarding the investigation of their nutritional parameters and quality. The aims of our study were: 1) to determine the total phenolic content (TPC), total anthocyanins content (TAC), antioxidant activity (AA), the scavenging capacity (IC50), the pro-oxidant activity (Pro-ox) and Pro-Antidex of 12 commercially available red fruit teas, 2) to classify the analysed teas and 3) to evaluate the similarities between samples. Read More

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The colors of biomass burning aerosols in the atmosphere.

Sci Rep 2016 06 16;6:28267. Epub 2016 Jun 16.

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science &Technology, Nanjing 210044, China.

Biomass burning aerosols mainly consist of black carbon (BC) and organic aerosols (OAs), and some of OAs are brown carbon (BrC). This study simulates the colors of BrC, BC and their mixture with scattering OAs in the ambient atmosphere by using a combination of light scattering simulations, a two-stream radiative transfer model and a RGB (Red, Green, Blue) color model. We find that both BCs and tar balls (a class of BrC) appear brownish at small particle sizes and blackish at large sizes. Read More

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Effect of drying on the bioactive compounds, antioxidant, antibacterial and antityrosinase activities of pomegranate peel.

BMC Complement Altern Med 2016 May 26;16:143. Epub 2016 May 26.

Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Department of Horticultural Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Stellenbosch, 7602, South Africa.

Background: The use of pomegranate peel is highly associated with its rich phenolic concentration. Series of drying methods are recommended since bioactive compounds are highly sensitive to thermal degradation. The study was conducted to evaluate the effects of drying on the bioactive compounds, antioxidant as well as antibacterial and antityrosinase activities of pomegranate peel. Read More

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Examining the locus of the attentional attraction effect.

Atten Percept Psychophys 2014 Nov;76(8):2389-97

University of Toronto, Toronto, Canada.

Our spatial perception is not always veridical. Indeed, systematic distortions in localization have been found to result from orienting of attention. Distorted localization is inferred from tasks wherein the subject reports the location of centrally presented parallel (vernier) line stimuli. Read More

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November 2014

Evaluation of free radical scavenging activity of some antioxidants.

Rev Med Chir Soc Med Nat Iasi 2014 Jan-Mar;118(1):239-43

Unlabelled: Measurement of free radical scavenging capacity of antioxidants is influenced by a number of parameters that depend on reaction rate.

Aim: A new method for assessing the free radical scavenging activity in which the influence of antioxidant concentration and reaction rate on chlorpromazine radical cation absorbance are simultaneously monitored.

Materials And Methods: The change in radical solution absorbance at 525 nm within a fixed time at different concentrations of the standard antioxidant--ascorbic acid (AA) are determined and percent inhibition is calculated. Read More

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Microscope-assisted precision dentistry.

Compend Contin Educ Dent 1999 Aug;20(8):723-8, 730-1, 735-6; quiz 737

To enhance their vision for both clinical and laboratory procedures, an increasing number of dental practitioners are introducing magnification into their practices. Most are using either simple or compound loupes mounted on glasses frames. And although magnification is not new to dentistry, it is a trend that is gaining a broader acceptance among both seasoned practitioners and recent graduates. Read More

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[Reproduction of the water voles (Arvicola terrestris) polymorphic for the aguti locus].

Genetika 1996 Aug;32(8):1125-30

Reproduction of three coat-color genotypes:brown, AA (homozygotes for the wild type agouti allele); melanic, aeae (homozygotes for the autosomal recessive extreme nonagouti allele); and black-brown, Aae (heterozygotes)-in the water vole was investigated under laboratory conditions. Nine possible kinds of crosses were identified. The Aae and aeae females had higher fertility than brown AA females, while males of all three group displayed similar fertility. Read More

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[Verification of the color genotype based on morphological analysis of fur pigmentation of brown and black water voles Arvicola terrestris L].

Genetika 1991 Aug;27(8):1423-30

Qualitative and quantitative analysis of fur pigmentation in brown and black water voles (Arvicola terrestris L.) was performed. Morphology of pigment granules, their distribution along the hair layers and histology of hair bulbs were studied. Read More

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