scholarly journals PHYSICAL-CHEMICAL, MICROBIOLOGICAL AND SENSORY PROPERTIES OF FRUCTOOLIGOSACCHARIDES ENRICHED YOGURT

2018 ◽  
Vol 5 (3) ◽  
pp. 97-103
Author(s):  
Dalila Lima Pádua ◽  
Valéria Ribeiro Maitan ◽  
Márcio Ramatiz Lima Santos

The functional foods present many health benefits besides their nutritional values pertinent to their chemical composition. They can play an important role on reducing the risk of chronic-degenerative diseases, like cancer, diabetes and others. The prebiotics are non-digestive fibers by the human body, but they increase the intestinal bacterial flora. Among these prebiotics are the fructooligosaccharides. This research aims to evaluate the physical-chemical, microbiological and sensory properties of fructooligosaccharides enriched yogurt. Sensory analysis was performed with 50 non-trained panelists using a structured nine point Hedonic scale for acceptance and buying intention. Microbiological (thermo-tolerant coliforms and salmonella sp/25g) and physical-chemical analyses (pH, titratable acidity expressed as, lactic acid concentration, and soluble solids as °Brix) were carried out in triplicate. All results were submitted to ANOVA and Tukey Test at 5 % of significance to verify the interaction between the averages. The acceptance was 7.9 indicating that product is according to "Liked very much" parameter. The purchase intention response showed 34% of panelists declaring that they would buy the yogurt if they could. The microbiological analysis were negative for thermo-tolerant coliforms and samonella sp./25g. Physical-chemical results were according to other similar products with average of pH 4.45, titratable acidity 0.82 g lactic acid/100 mL, and 22º Brix. Physical-chemical, microbiological and sensory analysis are in accordance to the Brazilian legislation.

2008 ◽  
Vol 26 (3) ◽  
pp. 371-374 ◽  
Author(s):  
Juliano Tadeu V de Resende ◽  
Letícia KP Camargo ◽  
Eliana JS Argandoña ◽  
Aline Marchese ◽  
Cristhiano K Camargo

The aim of this work was to carry out the chemical characterization and sensory analysis of strawberry fruits from cultivars Camp-dover, Dover, Camp-oso, Oso Grande, and Tudla-Milsei, grown in the southern region of Minas Gerais State. Soluble solids, titratable acidity, and the ratio between both characteristics were evaluated, in three replications. Sensory analysis was carried out by a panel of 34 non-trained assessors, recruited out of UNICENTRO students, professors, and employees. Assessors evaluated the samples for aroma and flavor using sorting-preference tests, with scores from 1 (less preferred) to 5 (most preferred). Appearance was assessed by means of a hedonic scale, from 1 (dislike very much) to 9 (like very much). Each assessor evaluated five samples of each cultivar for aroma and flavor. To evaluate external appearance, fruits were presented in polystyrene trays, covered with transparent film. Cultivars Camp-dover, Oso Grande, and Tudla-Milsei had the highest (p<0.05) contents of soluble solids (respectively 8.1, 7.8, and 7.6ºBrix); while for titratable acidity, the highest values were found in fruits of cultivars Tudla-Milsei, Oso Grande, and Dover (0.88, 0.80, and 0.60). For the soluble solids:titratable acidity ratio, cultivar Camp-dover (13.5) significantly exceeded all others. Fruits from cultivars Camp-dover and Oso Grande, for their good scores in aroma (3.70 and 2.80, respectively), flavor (3.82 and 3.52), and appearance (7.00 and 7.38) had the best acceptability. Considering the results all together, cultivars Camp-dover and Oso Grande stood out as promising options for strawberry growing, since their advantageous fruit characteristics are likely to favor commercialization.


1999 ◽  
Vol 4 (2) ◽  
pp. 61
Author(s):  
N. Guizani ◽  
K. Al-Ramadani

Fifteen samples of Laban made at home in three Omani regions were subjected to physical-chemical and microbiological analysis. Laban had an average titratable acidity, pH, fat, protein and total solids of 1.12%, 3.98, 1.I2%, 2. 11% and 6.29%, respectively. The microbial flora of traditional Omani laban was found to be predominantly mesophilic lactococci. and homofemenentative lactobacili. The mean Lactococci and lactobacilli counts were 1.3 x 10 8 and 2.4 x 10 6/ml respectively. The main microbial types involved in the manufacture of Omani laban were Lactoeoccus lactis ssp lactis. Lacrococcus locus ssp locus biov. Diacetylactis, Lactococcus lactis ssp, Cremoris. and Lactobacillus plantarum. Leuconostoc species were present in low proportion compared to other lactic acid bacteria. All Laban samples contained high yeast numbers and were highly contaminated with coliforms, and fecal coliforms.


Author(s):  
Thales H. B. Ferreira, Mírian L. F. Freitas

Brazil is one of the largest producer of banana in the world. However, its consumption is still compromised, because the fruit has a very short shelf life, which gives rise to the need for developing new ways to preserve it, such as drying or dehydration. The present study aims to produce dried banana by means of drying the fresh Musa Cavendish banana and to evaluate the influence of pre-treatments on the product’s quality and acceptability. Three samples were used: T1 was the control and had no pre-treatment; T2 received a pre-treatment composed of a sodium metabisulphite additive solution; and finally T3 was pre-treated with a citric and an ascorbic acid antioxidant solution. The samples were characterized according to yield calculation, moisture, titratable acidity, soluble solids, pH, water activity (aw), color parameters, instrumental texture, and sensory analyses for their overall acceptance and purchase intention. The yield was approximately 30% and there was low water activity and moisture in the product, even after drying for all treatments. There was also an influence of the pre-treatments on the physical, chemical and sensory characteristics of the dried banana. The overall acceptability results indicates a possibility for marketing the product.


2017 ◽  
Vol 32 (3) ◽  
pp. 301 ◽  
Author(s):  
Francisco Alexandro Alves de Oliveira ◽  
Emanuel Neto Alves de Oliveira ◽  
Fabíola Fernandes Galvão Rodrigues ◽  
Bruno Fonsêca Feitosa ◽  
Francisco Lucas Chaves Almeida

A crescente demanda dos novos consumidores tem incentivado as indústrias de sucos de fruta a inovarem em produtos diversificados, os quais precisam atender exigências específicas e cumprir com a função de nutrir e conferir benefícios à saúde. Partindo deste princípio, o presente trabalho objetivou o desenvolvimento e caracterização físico-química e sensorial de bebidas mistas funcionais de água de coco e graviola. Frente a esse propósito, formulou-se 5 bebidas com diferentes concentrações de polpa de graviola (25, 25, 35, 45 e 55%), água de coco (0, 40, 50, 60, 70%), em ordem respectiva; sendo compostas também por inulina (2%) e sacarose (5%). Analisou-se as formulações de bebidas funcionais mistas e suas matérias-primas – água de coco e polpa de graviola – quanto as propriedades físico-químicas (umidade, sólidos totais, cinzas, atividade de água, pH, acidez titulável total, sólidos solúveis totais, açúcares redutores, não redutores e totais, Ratio, sódio e potássio), bem como avaliou-se a aceitação sensorial das formulações (cor, aparência, aroma, consistência, sabor, doçura e impressão global, além da intenção de compra). Verificou-se que os resultados da composição físico-química obtidos para as bebidas funcionais mistas e matérias-primas se apresentaram em concordância com a legislação vigente (Instrução normativa n° 1/2000 e 12/2003 do MAPA). Além disso, na análise sensorial, a formulação B3 (35% polpa e 60% água de coco) foi a mais bem aceita diante das demais, as quais apresentaram diferenças significativas entre si para todos os parâmetros, exceto para a intenção de compra. Todas as amostras apresentaram índices de aceitação superiores a 70%, com destaque para a amostra elaborada com 35% de polpa de graviola e 60% de água de coco que obteve maior aceitação (88,73%) e intenção de compra. Desse modo, conclui-se que as bebidas mistas são alternativas para os consumidores que buscam bebidas com novos sabores, saudáveis e funcionais para consumo.PALAVRAS-CHAVE: Annona muricata, inulina, prebióticos. GRAVIOLA AND COCONUT WATER MIXED FUNCTIONAL BEVERAGE PHYSICAL-CHEMICAL AND SENSORIAL CHARACTERIZATIONABSTRACT: The growing demand of new consumers has encouraged  fruit juices industries to innovate and  diversify   their products, which need to meet specific requirements and fulfill the function of nourishing and providing health benefits. Based on this principle, the present work aimed the development and physical-chemical and sensorial characterization coconut water and graviola mixed beverages. Five beverages were made with different concentration of graviola pulp (25, 25, 35, 45 and 55%) and coconut water (0, 40, 50, 60, 70%),  plus inulin (2%) and sucrose (5%). The mixed functional beverages formulations and their raw materials - coconut water and graviola pulp - were analyzed for physicochemical properties (moisture, total solids, ash, water activity, pH, total titratable acidity, total soluble solids, reducing sugars, non-reducing sugar and total sugars, Ratio, sodium, and potassium), as well as evaluated by sensory acceptance (color, appearance, aroma, consistency, flavor, sweetness and overall assessment, as well as purchase intention). The physical-chemical analysisos all componentswere in accordance with the current legislation (Normative instruction No. 1/2000 and 12/2003 of MAPA). Furthermore, the formulation B3 (35% pulp and 60% coconut water) was the most accepted in senory analysis. All formulation presented significant differences in all parametres analyzed,  all except for purchase intention. All samples show acceptance rates higher than 70%, highlighting the sample with 35% of graviola pulp and 60% of coconut water, which obtained greater acceptance (88.73%) and purchase intention. It can be  concluded that mixed beverages are alternatives for consumers seeking beverages with new flavors, healthy, and functional for consumption.KEYWORDS: Annona muricata, inulin, prebiotics.


2015 ◽  
Vol 28 (4) ◽  
pp. 244-252 ◽  
Author(s):  
LUÍS GOMES DE MOURA NETO ◽  
ÉRICA MILO DE FREITAS FELIPE ROCHA ◽  
MARCOS RODRIGUES AMORIM AFONSO ◽  
SUELI RODRIGUES ◽  
JOSÉ MARIA CORREIRA DA COSTA

ABSTRACT: Dehydration is an important alternative to making the most of the use the surplus of production and take advantage of the seasonality of tropical fruits. Thus, this study aimed to evaluate the physicochemical composition of the yellow mombin pulp (Spondia mombin L.) powder, obtained by spray drying, and evaluate its sensory acceptance in the form of reconstituted juice. The physicochemical analyzes of the yellow mombin powder were: pH, soluble solids, titratable acidity, ascorbic acid and moisture, with all results in accordance with the current legislation. The addition of maltodextrin in the process reduced the sensory analysis values (color, appearance, and taste). The tested formulations, (powders with 25 and 27.05% maltodextrin) preserved, and even favored the aroma. These formulations had the following values (7.66 and 7.68) higher than the values found for integral juice (6.60).


2020 ◽  
Vol 4 (2) ◽  
pp. 1-14
Author(s):  
AYŞE GÜNEŞ BAYIR ◽  
Mehmet Gültekin Bilgin ◽  
Sümeyra Seyma Kutlu ◽  
Dilber Demirci ◽  
Fatma Nur Gölgeci

Clove (Syzygium aromaticum) is an aromatic bud has antioxidant, antifungal, antiviral, antimicrobial, antidiabetic, anti-inflammatory, anti-thrombotic, anesthetic, analgesic and insect repellent effects. Propolis is a sticky resinous material with same properties like clove. Therefore, the aim of this study was to produce probiotic yoghurts added propolis (0.03%) and clove in different concentrations (0.1%, 0.3% and 1.0%). Five different probiotic yoghurts were produced, and analyzed for their microbiological, chemical and sensory properties. Microbiological analyzes of probiotic yoghurts were carried out according to IDF and ISO standards. Their chemical and sensory analysis were performed according to Turkish Standards Data were analyzed by SPSS. Propolis showed antibacterial effect except S. thermophilus while clove improve the development of bacteria especially Bifidobacterium. The titratable acidity of all groups was increased while their pH value was decreased. Propolis showed antibacterial effect except S. thermophilus while clove improved the development of bacteria especially Bifidobacterium. Clove and propolis together changed the microbiological, chemical and sensory properties of probiotic yoghurts while probiotic yoghurt with propolis got the lowest score according to sensory properties.


2019 ◽  
Vol 49 (4) ◽  
Author(s):  
Ângela Preza Ramos ◽  
Aquidauana Miqueloto Zanardi ◽  
Cassandro Vidal Talamini do Amarante ◽  
Cristiano André Steffens ◽  
Adaucto Bellarmino Pereira-Netto

ABSTRACT: The aim of this study was to study the effect of the auxin naphthalene acetic acid (NAA) and the brassinosteroid 28-homocastasterone (28-HCS) applied every 15 days (harvest 2015/16) or every 21 days (harvest 2016/17) after full bloom, on the physical, chemical and biochemical attributes of the ‘Galaxy’ apples. The study was performed at a commercial orchard at Vacaria county, Rio Grande do Sul State, Brazil. The following treatments were applied: water (control), NAA (0.1%), 28-HCS (10‒6 M) and NAA (0.1%) + 28-HCS (10‒6 M). For this purpose, 300 μL of the plant growth regulator solutions were applied to the fruit peduncles. Fruits treated with NAA every 21 days presented higher starch-iodine index and lower total soluble solids (TSS), titratable acidity (TA), lightness index (L) and hue angle (h°) than 28-HCS-treated fruits. Fruits treated every 15 days with NAA presented reduced skin rupture force (SRF), total antioxidant activities (TAA) of the skin and flesh, and hydrogen peroxide content compared to the control fruits. In addition, NAA application every 15 and 21 days resulted in increased anthocyanin content in the skin. Application of NAA + 28-HCS reduced superoxide dismutase activity. 28-HCS applications increased TSS, color attributes (C and h°) of the skin, total antioxidant activity of the skin and flesh and peroxidase activity compared to control fruits. These results are expected to help to understand how plant growth regulators affect apple quality. In addition, results described here are also expected to help on the development of strategies to reduce post harvest losses and to increase fruit shelf life.


2017 ◽  
Vol 38 (2) ◽  
pp. 543 ◽  
Author(s):  
Ana Claudia Macedo ◽  
Amanda Cristina Esteves Amaro ◽  
Anamaria Ribeiro Pereira Ramos ◽  
Elizabeth Orika Ono ◽  
João Domingos Rodrigues

Until recently, fungicides were used exclusively for disease control; however observations of physiological effects brought a new concept to the use of these products. Strobilurins have positive physiological effects on crop yield, due to the increase of liquid photosynthesis and better hormonal balance. However, boscalid complements the action of these fungicides, applied alternately or together. The aim of this study was to evaluate the effect of strobilurins (azoxystrobin and pyraclostrobin), boscalid and the mixture of these on the physical-chemical quality of net melon fruits (Cucumis melo var. Reticulatus). The experiment was conducted in the municipality of São Manuel (SP), using the hybrid of Cantaloupe M2-308 net melon, the experimental design was in randomized blocks with five replicates. The treatments used were: T1 - control; T2 - azoxystrobin 60g ha-1 of active principle (a.p.); T3 - boscalid 75g ha-1 of the a.p.; T4 - pyraclostrobin 50g ha-1 of the a.p.; T5 - boscalid (37,5g ha-1) of the a.p. + pyraclostrobin (25g ha-1) of the a.p. The first application of the treatments was carried out at fourteen days after the transplanting of the seedlings and the others at seven day intervals, totaling eight applications throughout the cycle. Two fruits of each plot were collected, which were identified for analysis in the laboratory. The following characteristics were evaluated: fresh fruit mass; mesocarp thickness, pulp texture, peel trajectory, pH, titratable acidity, soluble solids and the ratio. The results were submitted to analysis of variance and the averages compared by the Tukey test at 5% probability using the SISVAR program. The fruits of the plants treated with boscalid 75g ha-1 were the ones that showed higher concentration of soluble solids and low titratable acidity, resulting in a better ratio. Despite the lower value, the fruits of the plants treated with pyraclostrobin 50g ha-1 showed a high ratio value, besides presenting higher value for pulp texture. The mixture of boscalid (37.5g ha-1) + pyraclostrobin (25g ha-1) also showed high values of soluble solids which resulted in a good “ratio” value.


2019 ◽  
Vol 13 ((03) 2019) ◽  
pp. 340-347
Author(s):  
Maristella Martineli ◽  
Kennia Karolline Gonçalves Pereira ◽  
João Rafael Prudêncio dos Santos ◽  
Ariane Castricini ◽  
Polyanna Mara de Oliveira ◽  
...  

This study aimed to evaluate the influence of different levels of irrigation on the quality parameters involved in the dried-bananas production from 3 different cultivars. The experimental design was a completely randomized factorial 3 x 3, with three genotypes of bananas (Prata-Anã, FHIA-18 and BRS Platina) produced in the semi-arid region of Minas Gerais.) and three irrigation levels (50, 75 and 100% of crop evapotranspiration - ETC), with three replications. For the processing purpose, the fruits were selected at the maturity stage 6. Then they sanitized in hypochlorite of sodium solution at 100 mg L-1, peeled and dehydrated through the drying convective method with hot air, in dryer with forced air, in dryer with forced air circulation at 65ºC for 24 hours. The dried bananas were evaluated according to the following physical and chemical aspects: moisture, length, diameter, firmness, color (brightness, chroma and ºHue), soluble solids and titratable acidity, and sensory characteristics: purchase intention and acceptance. The humidity, length, diameter, firmness, color and acidity of dried bananas were influenced by the different studied irrigation levels. In the sensory evaluation, the best result regarding appearance, color, texture and flavor requirements was observed in banana processed from 'Prata-Anã' irrigated with the total level of water (100%). The dried banana processed from 'BRS Platina' was the least accepted in the sensory tests.


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