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https://www.readbyqxmd.com/read/30064760/anthocyanins-and-polyphenols-in-cabernet-franc-wines-produced-with-saccharomyces-cerevisiae-and-torulaspora-delbrueckii-yeast-strains-spectrophotometric-analysis-and-effect-on-selected-sensory-attributes
#1
Phillip Minnaar, Ludwe Nyobo, Neil Jolly, Nombasa Ntushelo, Skyé Meiring
Grapes and wine contain phenolics divided into non-flavonoid and flavonoid classes. Yeast modulates the phenolics of wine by adsorption onto yeast cell walls. This may be advantageous for colour and quality. The effect of Torulaspora delbrueckii (654&M2/1) and Saccharomyces cerevisiae (VIN13) on phenolics and sensory attributes of Cabernet Franc wines (2012/2013) were evaluated. Spectrophotometric analysis was used to determine the phenolic content. Sensory analysis was conducted by expert tasters to evaluate the wines...
December 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/30049964/see-feel-taste-the-influence-of-receptacle-colour-and-weight-on-the-evaluation-of-flavoured-carbonated-beverages
#2
Line Ahm Mielby, Qian Janice Wang, Sidsel Jensen, Anne Sjoerup Bertelsen, Ulla Kidmose, Charles Spence, Derek Victor Byrne
A study was designed to assess whether the individual and combined effects of product-intrinsic and product-extrinsic factors influence the perception of, and liking for, carbonated beverages. Four hundred and one participants tasted samples of one of three flavours (grapefruit, lemon, or raspberry) of carbonated aromatised non-alcoholic beer. The beverages were served in receptacles that differed in terms of their colour (red or black) and weight (lighter-no added weight, or heavier-20 g weight added). Each participant received the same beverage in each of the four different receptacles, and rated how much they liked the drink...
July 26, 2018: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/30042574/multiple-responses-optimization-of-instant-dark-tea-production-by-submerged-fermentation-using-response-surface-methodology
#3
Yuwan Wang, Mingyue Zhang, Zhengzhu Zhang, Jun Jiang, Xueling Gao, Pengxiang Yue
In this study, submerged fermentation mode for preparing instant dark tea production was developed through utilizing industrial low grade green tea as raw material and Aspergillus niger as fermentation microbe starter. The fermentation parameters (inoculum size, liquid-solid ratio and rotation speed) were optimized by using Box-Behnken design and response surface methodology (RSM) with desirability function, the theabrownins content, redness and turbidity value as responses. The optimal conditions were set as follow: inoculum size of 5...
July 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29983954/effect-of-ethanol-on-flavor-perception-of-rum
#4
Chelsea M Ickes, Keith R Cadwallader
This is the first sensory study to evaluate the effects of ethanol concentration on flavor perception of distilled spirits. Dilution series of two rums (R1 and R2) were evaluated to gain insight into the effects of ethanol concentration on the flavor perception of distilled spirits. Rums were diluted 1:2 (v/v) either with pure water to a final alcohol by volume (ABV) of 20% (R1-W and R2-W) or with an aqueous 40% ABV solution (R1-E and R2-E). The later dilution accounted for the flavor dilution effect while keeping the ethanol concentration the same as the original liquors...
June 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29983952/optimization-of-red-teff-flour-malted-soybean-flour-and-papaya-fruit-powder-blending-ratios-for-better-nutritional-quality-and-sensory-acceptability-of-porridge
#5
Kiros Mezgebo, Tefera Belachew, Neela Satheesh
This study was carried out to optimize the compositions of red teff flour with malted soybean flour and papaya fruit powders for better nutritional quality and sensory acceptability of porridge. Total eleven formulations of the composite flours were determined using D-optimal mixture design with the help of Minitab Version 16 Statistical Software. The three ingredients were considered in the ranges of 55%-70%, 20%-30%, 5%-15% for red teff flour, malted soybean flour, and Papaya fruit powder, respectively. The prepared porridge samples from formulations were analyzed for nutritional composition, antinutritional factors, and sensory acceptability...
June 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29940217/pharmacokinetic-and-pharmaceutical-properties-of-a-novel-buprenorphine-naloxone-sublingual-tablet-for-opioid-substitution-therapy-versus-conventional-buprenorphine-naloxone-sublingual-tablet-in-healthy-volunteers
#6
Martin Jönsson, Gill Mundin, Michael Sumner
PURPOSE: A novel sublingual buprenorphine/naloxone rapidly-dissolving tablet (BNX-RDT) for opioid substitution therapy has been developed for improved bioavailability, rapid disintegration and improved taste masking. We compared the bioavailability and pharmaceutical properties of BNX-RDT with conventional buprenorphine/naloxone sublingual tablets (BNX). METHODS: Fasting, open-label, randomized, single-dose, two-cohort crossover study in healthy volunteers under naltrexone block...
June 22, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29892751/material-properties-of-ex-vivo-milk-chocolate-boluses-examined-in-relation-to-texture-perception
#7
Qi He, Filippo Bramante, Andrew Davies, Carole Elleman, Kelly Fourtouni, Bettina Wolf
The texture perception of chocolate products is a major driver for consumer liking and the popularity of this confectionary category. Whilst some texture attributes are clearly linked to the material properties of the chocolate bar itself, others are closer related to the properties of the chocolate bolus. However, little is known about the material properties of chocolate boluses. Hence the aim of this study was to gain more in-depth insights into this area and to evaluate how chocolate bolus material properties link to texture and mouthfeel perception...
June 20, 2018: Food & Function
https://www.readbyqxmd.com/read/29876103/physical-chemical-and-sensory-properties-of-biscuits-prepared-from-flour-blends-of-unripe-cooking-banana-pigeon-pea-and-sweet-potato
#8
Abiodun A Adeola, Ehimen R Ohizua
Biscuits were produced from 14 flour blends of cooking banana (UBF), pigeon pea (PPF), and sweet potato (SPF). The physical properties, nutrient composition, and sensory characteristics of the biscuits were evaluated using standard methods. Data obtained were subjected to analysis of variance, and mean values were separated using Duncan's multiple range test. The hardness of the biscuit samples decreased as PPF increased, while the fracturability decreased with increase in UBF. Biscuits were significantly ( p  < ...
May 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29803484/volatile-and-sensory-profiling-of-shiraz-wine-in-response-to-alcohol-management-comparison-of-harvest-timing-versus-technological-approaches
#9
Rocco Longo, John W Blackman, Guillaume Antalick, Peter J Torley, Suzy Y Rogiers, Leigh M Schmidtke
The aim of this study was to compare the volatile and sensory profiles of Australian Shiraz red wines produced by several methods to achieve alcohol concentrations of 10.5 and 13.5% v/v. These levels were considerably lower contents than the commercial wine (16-17% v/v) that was produced from this vineyard site. Wines were produced by: (i) harvest timing (19.3, 24 and 29.3 Brix); (ii) blending equal proportions of early harvest (19.3 Brix) and late harvest wines (29.3 Brix); and (iii) dealcoholization using reverse osmosis followed by a membrane contactor...
July 2018: Food Research International
https://www.readbyqxmd.com/read/29755971/impact-of-increasing-levels-of-oxygen-consumption-on-the-evolution-of-color-phenolic-and-volatile-compounds-of-nebbiolo-wines
#10
Maurizio Petrozziello, Fabrizio Torchio, Federico Piano, Simone Giacosa, Maurizio Ugliano, Antonella Bosso, Luca Rolle
Since the end of the last century, many works have been carried out to verify the effect of controlled oxygen intake on the chemical and organoleptic characteristics of red wines. In spite of the large number of studies on this subject, oxygen remains a cutting-edge research topic in oenology. Oxygen consumption leads to complex and not univocal changes in wine composition, sometimes positive such as color stabilization, softening of mouthfeel, increase of aroma complexity. However, the variability of these effects, which depend both on the oxygenation conditions and the composition of the wine, require more efforts in this research field to effectively manage wine oxygen exposure...
2018: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29739584/a-comparative-study-of-partial-dealcoholisation-versus-early-harvest-effects-on-wine-volatile-and-sensory-profiles
#11
Rocco Longo, John W Blackman, Guillaume Antalick, Peter J Torley, Suzy Y Rogiers, Leigh M Schmidtke
Two Verdelho and Petit Verdot wines were produced from sequential harvests of grapes. The alcohol concentration of early harvest (EH) and late harvest (LH) wines were respectively 9% and 13.5% v/v for Verdelho, and 10.5% and 13% v/v for Petit Verdot. LH wines were dealcoholised to match the same alcohol level of EH samples using a combined reverse osmosis-evaporative perstraction process. In dealcoholised wines, there was a decrease in volatile compounds (esters particularly) compared to LH treatments. For both varieties, the sensory attribute ratings for overall aroma intensity and alcohol mouthfeel also decreased following dealcoholisation...
September 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29739577/application-of-ultrasound-to-improve-lees-ageing-processes-in-red-wines
#12
Juan Manuel Del Fresno, Iris Loira, Antonio Morata, Carmen González, Jose Antonio Suárez-Lepe, Rafael Cuerda
Ageing on lees (AOL) is a technique that increases volatile compounds, promotes colour stability, improves mouthfeel and reduces astringency in red wines. The main drawback is that it is a slow process. Several months are necessary to obtain perceptible effects in wines. Different authors have studied the application of new techniques to accelerate the AOL process. Ultrasound (US) has been used to improve different food industry processes; it could be interesting to accelerate the yeast autolysis during AOL...
September 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29735105/improvement-of-flavor-profiles-in-chinese-rice-wine-by-creating-fermenting-yeast-with-superior-ethanol-tolerance-and-fermentation-activity
#13
Yijin Yang, Yongjun Xia, Xiangna Lin, Guangqiang Wang, Hui Zhang, Zhiqiang Xiong, Haiyan Yu, Jianshen Yu, Lianzhong Ai
Producing alcoholic beverages with novel flavor are desirable for winemakers. We created fermenting yeast with superior ethanol tolerance and fermentation activity to improve the flavor profiles of Chinese rice wine. Strategies of ethanol domestication, ultraviolet mutagenesis (UV) and protoplast fusion were conducted to create yeast hybrids with excellent oenological characteristic. The obtained diploid hybrid F23 showed a cell viability of 6.2% under 25% ethanol, whereas its diploid parental strains could not survive under 20% ethanol...
June 2018: Food Research International
https://www.readbyqxmd.com/read/29686656/diversity-and-function-of-microbial-community-in-chinese-strong-flavor-baijiu-ecosystem-a-review
#14
REVIEW
Wei Zou, Changqing Zhao, Huibo Luo
Strong flavor baijiu (SFB), also called Luzhou-flavor liquor, is the most popular Chinese baijiu. It is manufactured via solid fermentation, with daqu as the starter. Microbial diversity of the SFB ecosystem and the synergistic effects of the enzymes and compounds produced by them are responsible for the special flavor and mouthfeel of SFB. The present review covers research studies focused on microbial community analysis of the SFB ecosystem, including the culturable microorganisms, their metabolic functions, microbial community diversity and their interactions...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29603228/functional-properties-of-a-high-protein-beverage-stabilized-with-oat-%C3%AE-glucan
#15
Eva Vasquez-Orejarena, Christopher T Simons, John H Litchfield, Valente B Alvarez
This study evaluated the effect of oat flour and milk protein on the functional properties and sensory acceptability of shelf stable high protein dairy beverages containing at least 0.75 g of oat-β-glucan per serving size. Formulations adjusted to levels of 1.50% to 2.30% oat flour and 2.50% to 4.00% milk protein isolate (MPI) were thermal processed in a rotary retort. The finished product exhibited good suspension stability (>80%). The increase of oat and MPI contents lead to nectar-like beverages (51 to 100 mPas)...
May 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29603223/assessment-of-beer-quality-based-on-a-robotic-pourer-computer-vision-and-machine-learning-algorithms-using-commercial-beers
#16
Claudia Gonzalez Viejo, Sigfredo Fuentes, Damir D Torrico, Kate Howell, Frank R Dunshea
Sensory attributes of beer are directly linked to perceived foam-related parameters and beer color. The aim of this study was to develop an objective predictive model using machine learning modeling to assess the intensity levels of sensory descriptors in beer using the physical measurements of color and foam-related parameters. A robotic pourer (RoboBEER), was used to obtain 15 color and foam-related parameters from 22 different commercial beer samples. A sensory session using quantitative descriptive analysis (QDA® ) with trained panelists was conducted to assess the intensity of 10 beer descriptors...
May 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29580489/plant-cells-as-food-a-concept-taking-shape
#17
Emilia Nordlund, Martina Lille, Pia Silventoinen, Heli Nygren, Tuulikki Seppänen-Laakso, Atte Mikkelson, Anna-Marja Aura, Raija-Liisa Heiniö, Liisa Nohynek, Riitta Puupponen-Pimiä, Heiko Rischer
Plant cell cultures from cloudberry, lingonberry and stoneberry were studied in terms of their nutritional properties as food. Carbohydrate, lipid and protein composition, in vitro protein digestibility and sensory properties were investigated. Dietary fibre content varied between 21.2 and 36.7%, starch content between 0.3 and 1.3% and free sugar content between 17.6 and 33.6%. Glucose and fructose were the most abundant sugars. High protein contents between 13.7 and 18.9% were recorded and all samples had a balanced amino acid profile...
May 2018: Food Research International
https://www.readbyqxmd.com/read/29579947/sensory-description-of-marine-oils-through-development-of-a-sensory-wheel-and-vocabulary
#18
W E Larssen, E Monteleone, M Hersleth
The Omega-3 industry lacks a defined methodology and a vocabulary for evaluating the sensory quality of marine oils. This study was conducted to identify the sensory descriptors of marine oils and organize them in a sensory wheel for use as a tool in quality assessment. Samples of marine oils were collected from six of the largest producers of omega-3 products in Norway. The oils were selected to cover as much variation in sensory characteristics as possible, i.e. oils with different fatty acid content originating from different species...
April 2018: Food Research International
https://www.readbyqxmd.com/read/29579904/wine-tasting-based-on-emotional-responses-an-expedite-approach-to-distinguish-between-warm-and-cool-climate-dry-red-wine-styles
#19
Amaury Coste, Paulo Sousa, Manuel Malfeito-Ferreira
In this study, we improved an empirical tasting sheet including emotional responses and common sensory attributes. An Optimized Descriptive Profile (ODP) was run to characterize different red wines according to sensory descriptors used in the improved sheet. A total of 5 wines were evaluated by a Consumer Panel (CP) of 103 subjects (36 females, 67 males) using the improved sheet and a Check-All-That-Apply (CATA) list of 25 emotions. In the ODP, the panel identified the main discriminating sensory attributes as "Complexity", "Astringency" and "Duration of the wine fragrance"...
April 2018: Food Research International
https://www.readbyqxmd.com/read/29564119/the-effect-of-inulin-as-a-fat-substitute-on-the-physicochemical-and-sensory-properties-of-chicken-sausages
#20
Fereshteh Alaei, Mohammad Hojjatoleslamy, Seyyed Majid Hashemi Dehkordi
Due to its high thermal resistance and compatibility with the sausage emulsion system, the long-chain inulin can be used as a fat substitute in the formulation of this product. This study was conducted to investigate the effect of inulin on the physicochemical, textural, and sensory properties of chicken sausages. The study included treatments of 25%, 50%, 75%, and 100% substitution. After preparing the samples, their physicochemical, textural, calorimetric, and sensory properties were evaluated. The treatment of 100% substitution of inulin had the maximum amount of sugar (29...
March 2018: Food Science & Nutrition
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