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Article
Publication date: 15 June 2018

Solafa Abdulrahim Ali Hamad, Bahieldin I. Magboul, Abdel Moneim I. Mustafa and Isam A. Mohamed Ahmed

Sorghum is a vital cereal crop and staple food for many peoples around the globe having good nutritional and health-promoting bioactive compounds and recently received great…

Abstract

Purpose

Sorghum is a vital cereal crop and staple food for many peoples around the globe having good nutritional and health-promoting bioactive compounds and recently received great attention as gluten-free food. However, sorghum grains contain low β-glucans contents, dietary fibre polysaccharides with great technological and disease prevention properties, and improving the concentration of these compounds in sorghum is very important. Thus, the purpose of this paper is to investigate the physicochemical and starch properties of high β-glucan sorghum inbred line (Tabat-NL) in comparison with two commercial cultivars (Wadakar and Tabat-C).

Design/methodology/approach

Grain samples of sorghum cultivars: white colour and low tannin cultivar (Tabat-C), red colour and high tannin sorghum, and new inbred line of white sorghum cultivar (Tabat-NL) were carefully cleaned, examined for physical properties (colour, hectolitre and 1,000 kernel weights, and endosperm texture), and ground to flour and assessed for chemical composition (moisture, protein, ash, carbohydrate, sugars, fibre and β-glucan contents). The starch was extracted and investigated for morphological characteristics and functional properties.

Findings

The results showed that Tabat-NL grains contain significantly (p=0.05) higher values of 1,000 kernel weight, hectolitre weight, total carbohydrate, amylopectin, dietary fibre and β-glucan compared to Tabat-C and Wadakar. Tabat-NL starch had greater (p=0.05) gelatinization temperature, viscosity, bulk density, and water and oil holding capacities and lower (p=0.05) acidity compared to Tabat-C and Wadakar.

Research limitations/implications

The outcomes of this study demonstrated that Tabat-NL grains had an excellent marketing and milling properties, health-promoting and disease-preventing potentials, and technological features for uses in functional and speciality foods.

Originality/value

To the best of our understating, this is the first study on the evaluation of sorghum cultivar with high β-glucan content and could thus provide the bases for further development and application of this important food grains.

Details

World Journal of Science, Technology and Sustainable Development, vol. 15 no. 4
Type: Research Article
ISSN: 2042-5945

Keywords

Article
Publication date: 23 July 2020

Sangami Ravindran and RadhaiSri S.

Interest in probiotic food products has constantly increased due to the awareness on importance of gut microbiome; an increasing demand has encouraged the development of other…

Abstract

Purpose

Interest in probiotic food products has constantly increased due to the awareness on importance of gut microbiome; an increasing demand has encouraged the development of other matrices such as cereals, vegetable and fruit juices to deliver probiotics. The purpose of this paper is to standardize and evaluate a ready to serve probiotic oats milk drink fermented with microencapsulated Lactobacillus plantarum to be further used as a therapeutic module.

Design/methodology/approach

Fermentation of oats milk extract with microencapsulated L.plantarum was subjected to various trials in making it favourable for consumption and tested for sensory characteristics, physicochemical parameters, nutrient content, viable colony count and shelf life.

Findings

Fermented oats milk drink with 3% inoculum of microencapsulated L.plantarum was able to achieve desirable level of 2.5 × 108 and 2.3 × 108 colony forming units (CFU)/mL for spice and strawberry flavoured drink, respectively. Antioxidant property significantly increased after fermentation showing inhibitory effect against 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) assay (p = 0.05).

Research limitations/implications

Analysis of all the parameters were conducted only with three samples; this was the potential limitation identified in this study as large sample size always be a better representative of the results.

Practical implications

Spice and strawberry flavoured nondairy oats milk drink facilitated to be a suitable carrier for microencapsulated L. plantarum with good sensory attributes, low fat, moderate calorie, high fiber content, antioxidant potential and a shelf life of two-week period at 4°C.

Originality/value

The developed ready to serve, spice and strawberry flavoured nondairy oats milk drink with compactly packed functional components inclusive of beneficial probiotic organisms, ß-glucan and antioxidants can be prescribed as a therapeutic food for many clinical conditions and would serve as a good probiotic option for vegans.

Details

Nutrition & Food Science , vol. 51 no. 3
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 12 April 2021

Meena Thakur, Neha Gupta, Harish Kumar Sharma and Sunita Devi

The purpose of this study is to assess the quality of honey from different agro-climatic zones of Himachal Pradesh in terms of physicochemical characteristics and mineral status.

Abstract

Purpose

The purpose of this study is to assess the quality of honey from different agro-climatic zones of Himachal Pradesh in terms of physicochemical characteristics and mineral status.

Design/methodology/approach

Three honey-producing locations were selected within each agro-climatic zone, honey sampled from four separate apiaries within each location and analyzed for physicochemical characteristics and mineral status using standard methodologies. The data were analyzed using one-way analysis of variance with one-way classification, after appropriate transformation through online OP-STAT software and MS Excel. The correlation coefficient (r) was also calculated. Principal component analysis was done using XL-STAT software.

Findings

The honey of Zone 4 had highest fructose (36.62%), F:G ratio (1.55), acidity (46.07 meq/kg), vitamin C (25.04 mg/100 g) and diastase (19.22 DN), whereas the pollen density (76,666.67 pollen grains per 10 g), pH (5.94), sucrose (6.94%), hydroxy methyl furfuraldehyde (70.20 mg/kg), amino acid (103.83 mg/100 g), phenols (77.39 mg/100 g), Ca (81.04 mg/kg) and K (354.17 mg/kg) were highest for Zone 2. Highest electrical conductivity (0.24 mS/cm), moisture (16.50 %), glucose (34.20%) and P content (62.93 mg/kg) were recorded for Zone 1. Correlation studies indicated a significant positive correlation between pH and EC; EC and moisture; colour and pollen density. Examining the graphical distribution of the honey samples, a natural separation between honeys of four different agro-climatic zones was obtained.

Originality/value

The impact of geographical/agro-climatic variations in physicochemical characteristics of honey has not been worked out under the present scenario in Himachal Pradesh.

Details

British Food Journal, vol. 123 no. 11
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 2 September 2019

Katarzyna Włodarska, Katarzyna Pawlak-Lemańska and Ewa Sikorska

The purpose of this paper is to analyse physicochemical and sensory profiles of apple juices using multivariate methods and to predict the essential sensory properties by means of…

Abstract

Purpose

The purpose of this paper is to analyse physicochemical and sensory profiles of apple juices using multivariate methods and to predict the essential sensory properties by means of instrumental measurements.

Design/methodology/approach

The studied set included apple juices reconstituted from concentrate (clear and cloudy) and direct (pasteurised and freshly squeezed, not pasteurised). The physicochemical (colour, turbidity, total soluble solids, sucrose, D-glucose, D-fructose content, pH, total acidity, total phenolic, total flavonoid content and antioxidant capacity) and sensory profiles of juices were analysed by principal component analysis and partial least squares (PLS) regression.

Findings

An exploratory study of physicochemical and sensory profiles revealed dimensions differentiating apple juices. The first dimension was related to their physical properties (clarity, sediment and colour coordinates L*, C*, h°), whereas the second dimension referred to their flavour, being positively correlated with sourness and astringency, and negatively with sweetness. The PLS regression analysis revealed the quantitative relationship between sweet and sour flavours and the instrumental measurements. The physicochemical parameters of apple juices contributing positively or negatively to the key sensory attributes were determined based on the regression coefficients.

Originality/value

This study presents a possibility to predict the key sensory attributes of apple juice on the basis of selected physicochemical parameters. This approach could be a supporting tool for sensory analysis that could allow the quality characterisation on a large sample set and hence shorten the time necessary for routine quality control, product design and development.

Details

British Food Journal, vol. 121 no. 10
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 13 July 2015

Adewale Williams Adebayo, Babatunde S Ogunsina and Olasunkanmi Saka Gbadamosi

– This study aims to investigate some physicochemical characteristics of Hildegardia barteri seed oils obtained by cold-pressing and solvent extraction procedures.

Abstract

Purpose

This study aims to investigate some physicochemical characteristics of Hildegardia barteri seed oils obtained by cold-pressing and solvent extraction procedures.

Design/methodology/approach

Crude oil samples were obtained from the kernels by cold pressing and solvent extraction. The physicochemical properties of the oil samples were investigated according to the standard procedures in published works of literature.

Findings

The oil yield was 55.7 and 97 per cent for cold-pressed kariya seed oil (CPKSO) and solvent-extracted kariya seed oil (SEKSO), respectively. Specific gravities, refractive indices, viscosities, iodine value, saponification value, peroxide value and acid value were 0.8742 and 0.9036; 1.4629 and 1.4584; 75.93 and 74.90 mPa.s; 55.78 and 53.56 g of I2/100g of oil; 249.76 and 253.90 mg KOH/g; 4.86 and 5.02 meq KOH/g; 2.12 and 2.09 mg KOH/g of oil for CPKSO and SEKSO, respectively. The physicochemical characteristics of kariya seed oil were not significantly affected by extraction method. The fatty acid profiles of CPKSO and SEKSO showed that the two oil samples contain 24.2 and 23.7, 31.3 and 29.3, 23.2 and 23.7 and 19.6 and 21.3 per cent of myristic, palmitic, stearic and linolenic acids, respectively. Lauric and oleic acids were present in very little proportions of 0.3 and 0.41; and 0.01 and 0.03 per cent, respectively, whereas linoleic acid was 1.4 per cent for the two oil samples. Significant differences in fatty acid profiles were observed for lauric, palmitic and linolenic acids (p = 0.05). Saturated and unsaturated fatty acids were about 79.0 and 77.11 per cent and 21.01 and 22.73 per cent for CPKSO and SEKSO, respectively.

Practical implications

This work promotes H. barteri tree beyond its use as a mere ornamental plant. The non-conventional seed oil it produces may find relevance in the food or biofuels industry subject to further investigation.

Originality/value

This study is the first to document the extraction and physicochemical properties of kariya seed oils.

Details

Nutrition & Food Science, vol. 45 no. 4
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 26 August 2014

Zahra Bazrafshan, Maryam Ataeefard and Farahnaz Nourmohammadian

This paper aims to report on production of the colour digital printing toners cyan, magenta and yellow. Colour digital electrophotographic printing is currently in high demand…

Abstract

Purpose

This paper aims to report on production of the colour digital printing toners cyan, magenta and yellow. Colour digital electrophotographic printing is currently in high demand. The provision of a large colour gamut depends on appropriate selection of precise colourants to produce toner capable of producing a thin layer on paper.

Design/methodology/approach

Printing toners were synthesised by the emulsion aggregation method, and then evaluated for chemical constitution and effects of the colourant substituents.

Findings

Results demonstrated that increasing the polarity of a pigment produced better dispersion and lower particle size with narrower distribution and even better colour reproduction. While, changing a pigment’s characteristics did not affect the toner shape or its thermal properties.

Practical implications

The developed method provides a simple way to synthesise colour printing toner.

Social implications

Emulsion aggregation toners provide less hazardous materials during printing.

Originality/value

Evaluations of the influence of solid-state parameters and physicochemical properties of the pigments on printing toner characteristics were done for the first time.

Details

Pigment & Resin Technology, vol. 43 no. 5
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 3 January 2020

Marcelo Caetano de Oliveira, Paula Nogueira Curi, Rafael Pio, Daniela da Hora Farias, Marcio Roberto Rigote, Maria Cecília Evangelista Vasconcelos Schiassi, Moacir Pasqual and Vanessa Rios de Souza

The native species from western Mato Grosso do Sul provide fruits with unique sensory characteristics and high nutrient concentrations. Tropical fruit consumption is increasing…

Abstract

Purpose

The native species from western Mato Grosso do Sul provide fruits with unique sensory characteristics and high nutrient concentrations. Tropical fruit consumption is increasing due to the growing recognition of the nutritional value. These fruits play important roles through the marketing of their products and nutritionally through their consumption. All fruits are edible and are used in the food industry and well sensory accepted. The purpose of this paper is to verify the physicochemical characteristics, bioactive compounds and antioxidant activity in fruits collected in the Cerrado and Pantanal biomes from western Mato Grosso do Sul.

Design/methodology/approach

The fruits of baru, bocaiuva, jatobá, jenipapo and pequi were collected. To characterize them, longitudinal diameter, transverse diameter, total soluble solids, acidity, pH, ascorbic acid, total phenolics, antioxidant capacity, total sugar, glucose and macro and micronutrient contents analysis were performed in triplicate.

Findings

Jatobá presented the highest values of vitamin C. For phenolics, baru and jatobá stood out; bocaiuva presented the highest results for sugars, while jatobá was superior for glucose. The fruits with the highest antioxidant capacity, DPPH, were pequi and baru, while via ABTS the jatobá was the highest. Baru presented higher levels of nitrogen, phosphorus, magnesium, copper, zinc and iron. The bocaiuva presented the highest results for potassium and sulfur, the jatobá calcium and manganese. Jenipapo stood out with its boron content. Magnesium presented superior results in the baru, jenipapo and bocaiuva. The results reinforce the diversity of physicochemical characteristics.

Originality/value

The increase of the flow of available information, together with the growth of multicultural influences, the search for wholesome diet and the diversity of flavors and colors make these fruits important regional development tools. Their characteristics encompass national and international exploration potential that arouse consumer interest and contribute to the pursuit of innovations. In addition, the native species mentioned above provide fruits with unique sensory characteristics. Their consumption is increasing in the markets due to the growing recognition of their nutritional value. Therefore, these fruits play important roles, economically, through the marketing of their products and nutritionally through their consumption.

Details

British Food Journal, vol. 122 no. 3
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 26 January 2010

L.E. Yahaya, O.M. Aliyu, L.A. Hammed and S.O. Aroyeun

The purpose of this paper is to determine the physicochemical characteristics of yellow and red apples cultivars of cashew. This is with a view to harnessing the quality…

634

Abstract

Purpose

The purpose of this paper is to determine the physicochemical characteristics of yellow and red apples cultivars of cashew. This is with a view to harnessing the quality attributes of the different cultivars of cashew. Parameters investigated include pH, refractive index, specific gravity, vitamin C content, juice astringency, chlorophyll and juice yield.

Design/methodology/approach

The methods of the Association of Official Analytical Chemists (AOAC) are employed in assaying the physicochemical properties, while the astringency is determined spectrophotometrically according to standard methods.

Findings

Results showed that percentage juice yield increases linearly with maturity for both cultivars. A maximum of 79.5 per cent is obtained for the yellow apple cultivars, while 74.1 per cent juice yield is obtained in the red apple cultivar. The pH ranged from 3.73‐4.5 and 3.64‐4.55 for red and yellow apple cultivars, respectively, with a marked fall between seven and eight weeks after pollination (WAPo). Specific gravity and refractive index are of the order 0.999‐1.007 and 1.34‐1.89 for both selected samples. Highest refractive index is obtained in red and yellow cultivars at seven and eight WAPo. The changes in ascorbic acid followed a linear pattern and the maximum values of 249.5 mg/100 ml and 185.5 mg/100 ml are obtained for yellow and red apple cultivars, respectively. Meanwhile, the juice astringency level decreased steadily with maturity and at the ninth WAPo, values obtained are 0.47 and 0.86 mg/100 ml tannin for yellow and red apple cultivars, respectively. Generally, pH, astringency, refractive index, juice content, ascorbic acid and chlorophyll contents showed marked variations between six and eight WAPo, confirming physiological maturity and ripening in the crop species.

Originality/value

Cashew farmers and industrialists will know the best time to harvest the crop when the quality is at its peak.

Details

British Food Journal, vol. 112 no. 1
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 9 November 2015

S. Talukder, S.K. Mendiratta, Arvind Soni, Tarun Pal Singh, Lalchamliani Chhangte, R.R. Kumar, Meena Goswami, O. P. Malav and Irshad A

The aim of this study was to explore the feasibility of formulation, quality characterization and acceptability of rice flour- and black gram flour-incorporated mutton snack among…

167

Abstract

Purpose

The aim of this study was to explore the feasibility of formulation, quality characterization and acceptability of rice flour- and black gram flour-incorporated mutton snack among consumers. Cereal-based snacks, which have very less nutritional value, are highly popular among Indian consumers. Malnutrition and protein deficiencies can be overcome by supplying nutrient-dense meat-incorporated cereal-based snacks to them. On this background, it was planned to incorporate easily available sheep meat to popular snack to improve the nutritional quality, acceptability and functionality of traditional snack.

Design/methodology/approach

Mutton-based snack formulation was standardized; rice flour (Treatment-I [T-I]), black gram flour (Treatment-II [T-II]) and their combination (Treatment-III [T-III]) were used along with lean meat for the preparation of mutton snack. Microwaving and frying process of cooking was applied, and various physicochemical and sensory properties of both raw and cooked snack were evaluated.

Findings

Emulsion stability and expansion percentage increased significantly (p < 0.05) in all treatment products in both cooking process except in T-III. Significant (p < 0.05) decrease in protein percentage and increase in fat percentage has been recorded in all treatments and cooking process in comparison to control. The overall acceptability scores increased significantly in all the treatments except T-III in comparison to control. On the basis of physicochemical and sensory attributes the microwaved black gram flour-added mutton snack (T-II) was adjudged as most acceptable and was stored for a period of 45 days at ambient temperature. It was concluded that optimized product could be stored at room temperature in LDPE pouches for 45 days without marked deterioration in quality on the basis of evaluations of physicochemical (pH and thiobarbituric acid reacting substances value) and microbiological parameters (total plate count, coliform count and yeast and mould count).

Research limitations/implications

Future research may benefit from attempting to modify shelf life of the snack in room temperature by modifying storage and packaging condition.

Originality/value

Although incorporation of meat in cereal-based traditional snack and the effect on its quality characteristics have been extensively examined, limited research has focused on this aspect. Additionally, limited qualitative research has examined the storage characteristics of meat-incorporated snack at room temperature in eating quality context.

Details

Nutrition & Food Science, vol. 45 no. 6
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 26 June 2019

Paula Nogueira Curi, Francielly Corrêa Albergaria, Rafael Pio, Maria Cecília Evangelista Vasconcelos Schiassi, Bruna de Sousa Tavares and Vanessa Rios de Souza

The purpose of this paper is to characterise eight different fig cultivars with respect to antioxidant activity and bioactive compound content and to assess the influence of these…

Abstract

Purpose

The purpose of this paper is to characterise eight different fig cultivars with respect to antioxidant activity and bioactive compound content and to assess the influence of these cultivars on the physicochemical characteristics, rheological properties and sensory acceptance of the obtained jelly to identify cultivars with increased potential for processing when grown in subtropical regions.

Design/methodology/approach

The analyses of fig fruits and fig jellies were performed in triplicate. To characterise the fig cultivars, analyses of antioxidant activity, phenolic compound content and ascorbic acid concentration were performed on fresh fruits. For the jellies, the total titratable acidity, pH, soluble solids, colour, texture profile and sensory attributes were analysed.

Findings

With respect to antioxidant activity and bioactive compounds, the Roxo de Valinhos displayed the highest antioxidant activity according to the ABTS method, ß-carotene and DPPH; the Três num Prato, Lemon and Brunswick cultivars presented the highest ascorbic acid values; and the Três num Prato cultivar also had the highest total phenolic content. Generally, the various fig cultivars yielded jellies with different physical and chemical characteristics and different rheological properties. This variation did not significantly affect acceptability. This study demonstrates that all of the evaluated cultivars have high potential for processing.

Originality/value

This study evaluated the processing potential of Roxo de Valinhos and other fig cultivars in the form of jelly, which in view of the food risk concerns of the dried fig, seems to be an interesting alternative for consumption of processed fig.

Details

British Food Journal, vol. 121 no. 8
Type: Research Article
ISSN: 0007-070X

Keywords

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