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1 – 10 of 125M. Bekers, D. Upite, E. Kaminska, R. Linde, R. Scherbaka, A. Danilevich and M. Grube
The aim of this study is to find out the appropriate fermentation conditions of Jerusalem artichoke powder (JAP) based media to obtain light beverage containing inulin.
Abstract
Purpose
The aim of this study is to find out the appropriate fermentation conditions of Jerusalem artichoke powder (JAP) based media to obtain light beverage containing inulin.
Design/methodology/approach
JAP water suspension or filtrate were used for preparation of growth media with or without enzymatic hydrolysis of inulin for fermentation by Zymomonas mobilis 113 “S” or Saccharomyces cerevisiae.
Findings
If enzymatic hydrolysis of inulin was not used significantly higher amount of inulin (7.42 per cent) was unconverted by Z. mobilis than by S. cerevisiae (2.22 per cent) while the ethanol concentration was much higher (2.86 per cent) after S. cerevisiae fermentation than after Z. mobilis fermentation (1.21 per cent). Considerably more ethanol was produced by Z. mobilis during co‐fermentation with Fructozyme L of JAP suspension filtrate (5.98 per cent) and suspension (4.96 per cent). Analyses of volatile components of fermentation broths showed that for production of inulin containing light beverages the best was Z. mobilis fermentation of JAP water suspension or filtrate without enzymatic treatment. FT–IR spectroscopy can be used as a quick semi‐quantitative method for evaluation of inulin content.
Originality/value
JAP – containing not only inulin but all tuber ingredients, was used as a media for ethanol fermentations by Z. mobilis 113 “S” or S. cerevisiae with or without hydrolysis of inulin. It was shown that Z. mobilis fermentation broths containing 7.42 per cent of inulin can be used as beverage with prebiotic‐dietary fibre benefits. The taste of this product can be regulated by appropriate fermentation conditions and the concentration of fructose and ethanol.
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M. Bekers, M. Grube, D. Upite, E. Kaminska, R. Linde, R. Scherbaka, A. Danilevich, M. Bekers, M. Grube, D. Upite, E. Kaminska, R. Linde, R. Scherbaka and A. Danilevich
The aim of this study was to evaluate the influence of temperature and action time on the extraction rate of carbohydrates of Jerusalem artichoke concentrate powder and…
Abstract
Purpose
The aim of this study was to evaluate the influence of temperature and action time on the extraction rate of carbohydrates of Jerusalem artichoke concentrate powder and inactivation of inulin during boiling and sterilization.
Design/methodology/approach
Water suspension of Jerusalem artichoke concentrate (5g/100ml) at 25, 50 and 100○C was tested after 5, 15, 30 and 60min to determine the content of inulin, glucose, fructose and sucrose and evaluate the extraction rate. The stability of inulin was studied after boiling and sterilization at 120○C during 1, 2 and 3h. The extraction rate was evaluated by Fourier‐Transform Infrared (FT‐IR) spectroscopy as well.
Findings
It was shown that extraction of soluble carbohydrates – fructose, glucose, sucrose and inulin, from water suspension of Jerusalem artichoke concentrate was practically completed in 5min at 25○C. The extraction rate was not significantly influenced by temperatures lower than 100○C. Inulin was stable during boiling for 1h but sterilization for 1h caused significant losses. Infrared spectral analysis of soluble and insoluble fractions showed that inulin was practically fully extracted.
Originality/value
The paper shows that inulin can be easily extracted from Jerusalem artichoke concentrate powder even at 25○C and it maintains for 60min at temperatures up to 100○C, nevertheless boiling or sterilization at higher temperatures for longer time causes significant loses of inulin and consequently the functional quality of Jerusalem artichoke powder. These results must be taken into account when applying inulin concentrates as functional food components.
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Ahmed Moawad Mabrouk, Ahmed Rabea Abd-Elgawad and Hani S. Abd El-Montaleb
The purpose of this study is to investigate the viability of probiotics, physicochemical and sensory properties of reduced fat synbiotic ice cream.
Abstract
Purpose
The purpose of this study is to investigate the viability of probiotics, physicochemical and sensory properties of reduced fat synbiotic ice cream.
Design/methodology/approach
The treatments were as follows: control was made by the addition of Lactobacillus salivarius NBIMCC 1589 and Lactobacillus crispatus NBIMCC 2451 (1:1). The treatments (T1, T2 and T3) were made with the addition of L. salivarius NBIMCC 1589 and L. crispatus NBIMCC 2451 (1:1) + 2% oat flour, 2% inulin and 4% oat flour + inulin (1:1). Physiochemical parameters (pH, moisture, fat, protein, fibre, ash, overrun, first dripping time and melting rate) were determined.
Findings
The ice cream with inulin and oat flour had lower moisture content, which was recorded 70.41, 69.88 and 68.82% for T1, T2 and T3, respectively. While the protein, fat and ash content of treated samples increased. The highest acidity (0.43%) was recorded in T3. The overrun increased by around 43% in T3 compared with control. The viable counts of probiotics were significantly (p = 0.05) decreased by two or three log cycles. Finally, T3 received the highest sensory score, which could be due to the combination between oat flour and inulin.
Originality/value
A novel ice cream was produced using a combination of inulin and oat flour, which enhanced the viability of added probiotics. Reduced fat synbiotic ice cream was a good carrier for probiotics, which facilitates the production of healthy dairy products.
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Mojtaba Yousefi, Nasim Khorshidian and Hedayat Hosseini
The purpose of this paper is to present an overview of different aspects of inulin functionality in meat and poultry products.
Abstract
Purpose
The purpose of this paper is to present an overview of different aspects of inulin functionality in meat and poultry products.
Design/methodology/approach
Several studies on the physiochemical, textural and sensorial effects of inulin incorporated in meat and poultry products as fat replacer and texture modifier were reviewed.
Findings
Inulin is a plant-derived carbohydrate composed of fructose units and glucosyl moieties at the end of the chain that exhibits unique nutritional and technological benefits. Among its main healthy characteristics, it has been reported to reduce the risk of colon cancer, arteriosclerosis, osteoporosis, diabetes and obesity, to maintain low levels of triglycerides and cholesterol in serum and stimulate the immune system. As a functional food ingredient, it can be used in various foods as a fat replacer, improves water-holding capacity and emulsion stability, as well as modifying the texture and viscosity of foods. Incorporation of inulin into meat and poultry products can be beneficial in producing low-fat products with desirable texture and sensory attributes.
Originality/value
There are limited reviews regarding the application of inulin in meat and poultry products. In this review, chemical composition and physicochemical properties of inulin, its health effects and various effects of inulin incorporation into meat and poultry products including, physicochemical, textural and sensory characteristics of these products are discussed.
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K.W. Yap, S. Mohamed, A.M. Yazid, I. Maznah and D.M. Meyer
The objective of this study is to examine the dose‐response effect of inulin on mineral absorption and faecal short‐chain fatty acids concentration in formula‐fed infants.
Abstract
Purpose
The objective of this study is to examine the dose‐response effect of inulin on mineral absorption and faecal short‐chain fatty acids concentration in formula‐fed infants.
Design/methodology/approach
The effects of inulin on faecal short‐chain fatty acids and minerals absorption in 36 healthy, formula‐fed infants given three different doses of inulin (0.75g/d, 1.00g/d, and 1.25g/d) were studied using complete randomized design. Acetic, butyric, propionic and lactic acids were analysed using gas chromatography.
Findings
No significant (p<0.05) difference was observed in the infant faecal short‐chain fatty acids contents during the basal period, the intake period and the washout period. A significant (p<0.05) increase in per cent apparent absorption, per cent apparent retention and net retention of iron were seen in infants supplemented with 1g/day inulin. A significant (p<0.05) increase in per cent apparent retention and net retention of Magnesium was also seen in infants supplemented with 0.75, 1 and 1.25g/day inulin. A significant (p<0.05) increase in per cent apparent absorption and net retention of Zinc was seen in infants supplemented with only 0.75g/day inulin. No significant improvement in calcium, or copper absorption or retention was observed in all the doses of inulin studied.
Originality/value
Most previous studies were conducted on adults and adolescents.
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Marilyn G.F. Kuntz, Giovanna M.R. Fiates and Evanilda Teixeira
The purpose of this paper is to identify food products being developed with the addition of the prebiotic inulin (a soluble, fermentable dietary fibre that stimulates the growth…
Abstract
Purpose
The purpose of this paper is to identify food products being developed with the addition of the prebiotic inulin (a soluble, fermentable dietary fibre that stimulates the growth of beneficial bacteria in the colon), in order to determine how its addition modifies their probiotic, physicochemical and sensory characteristics.
Design/methodology/approach
The paper's approach is a systematic review of the Web of Science, Medline/Pubmed and Scielo‐Br electronic databases, from 2001 to 2011. Of the 256 abstracts initially retrieved, those reporting development of products containing inulin were included, while those regarding literature review, clinical investigations, inulin extraction and effects on the human body were excluded. Full papers of all the 28 studies identified as relevant to the aims of the review were then obtained.
Findings
Inulin quantities added to products varied from 1 to 32 per cent. Products containing inulin had improved microorganism counts and received either equal or better scores in sensory analysis tests. pH and colour of high fat content products were not significantly altered by inulin addition. Texture profile of high protein and carbohydrate content products was irregularly altered by inulin addition. Food composition was found to determine the necessary amount of inulin to induce the desired changes. Highest added quantities were observed in the group of products with high carbohydrate content.
Originality/value
The paper presents a compilation of information regarding inulin percentage needed to alter physicochemical and sensory characteristics of products with different protein, fat and carbohydrate content.
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Silvia Marina González-Herrera, Raul Rodriguez Herrera, Mercedes Guadalupe López, Olga Miriam Rutiaga, Cristobal Noe Aguilar, Juan Carlos Contreras Esquivel and Luz Araceli Ochoa Martínez
The purpose of this paper is to explore the variety of food in which it has been applied as a prebiotic and functional ingredient, the concentrations used there in, the tests that…
Abstract
Purpose
The purpose of this paper is to explore the variety of food in which it has been applied as a prebiotic and functional ingredient, the concentrations used there in, the tests that have been conducted on these fortified foods and briefly reviews the history and characteristics of inulin.
Design/methodology/approach
The review included articles from 1999-2013. The papers which reported inulin concentrations used, the purpose of the application and tests on final product, were mainly selected. Articles were collected in electronic databases such as Elsevier-Science Direct, Emerald, Springer Link, Wiley and Redalyc.
Findings
The interaction inulin-food with different food matrices is complex, and is not always technologically favorable for the product. Moreover, additional to evaluations of sensory, physicochemical and rheological characteristics, it is essential to carry out measurements in the food, of such characteristics as prebiotic content, and prebiotic activity in vivo and in vitro, and assess potential adverse reactions in order to define suitable doses of consumption.
Originality/value
The paper highlights the importance of conducting in vitro and in vivo testing of potential prebiotic inulin-supplemented food in order to define dose that benefit health and do not cause unacceptable gastrointestinal distress.
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Yogesh P. Gadekar, B.D. Sharma, Ajay Kr. Shinde, Arun Kr. Das and S.K. Mendiratta
This paper aims to evaluate the effects of inulin (3 per cent), chitosan (1 per cent) and carrageenan (0.5 per cent) addition on the physico-chemical, sensory and textural…
Abstract
Purpose
This paper aims to evaluate the effects of inulin (3 per cent), chitosan (1 per cent) and carrageenan (0.5 per cent) addition on the physico-chemical, sensory and textural attributes of restructured goat meat products. Health conscious consumers are much more interested in product with added health benefit. Keeping this in mind, this study was undertaken to find out effective ingredient for low fat restructured goat meat product.
Design/methodology/approach
Formulation for restructured goat meat blocks was optimized and four different formulation containing different ingredients, namely, control, inulin (3 per cent), chitosan (1 per cent) and carrageenan (0.5 per cent), were used to find out best ingredient for healthier goat meat product and various physicochemical and sensory properties of the product were evaluated.
Findings
Results showed that addition of carrageenan improved (p < 0.01) the product yield (86.0 per cent) significantly. The proximate composition, expressible water and water activity were similar. The moisture retention percentage was significantly (p < 0.01) reduced (86.0 per cent) due to addition of inulin. Carrageenan significantly (p < 0.05) increased the lightness (42.4) and yellowness (10) values. Significantly (p < 0.05) lower shear force values were observed in inulin (0.5) and chitosan (0.4) containing samples than control (0.7 kg/1.5 cm2). Hardness values were significantly (p < 0.05) lower in restructured product containing chitosan (56.1 N/cm2) and carrageenan (59.4 N/cm2). Similarly, springiness values were significantly (p < 0.05) lower (0.7 vs 0.8 cm) in carrageenan containing product. Inulin, chitosan and carrageenan did not significantly influence the sensory attributes of restructured goat meat product. It is concluded that inulin, chitosan and carrageenan could be used to improve technological and functional attributes of the healthier restructured goat meat product.
Research limitations/implications
Future research may benefit from efforts to modify shelf life of the product by modifying packaging condition.
Originality/value
The healthier meat-based restructured goat meat product has been developed, and the effect on its quality characteristics have been extensively examined, limited research has focused on this aspect.
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Joshua Ie Xin Soh, Malvino Wilian and See Wan Yan
In recent years, global demand for functional foods grew tremendously due to the rising trend of health-conscious consumers. Driven by increased awareness of probiotic products…
Abstract
Purpose
In recent years, global demand for functional foods grew tremendously due to the rising trend of health-conscious consumers. Driven by increased awareness of probiotic products, consumption of yogurt drink is gaining popularity across all age groups. In the present study, the authors aimed to assess sensorial, nutritional and technological properties of synbiotic yogurt drink enriched with prebiotic inulin.
Design/methodology/approach
Sensory analysis, proximate compositions, viscosity, viable count and DPPH radical scavenging activity were examined in control (without inulin) and 3 variants of inulin-supplemented synbiotic yogurt drink, namely F1 (4%, inulin), F2 (4.5% inulin) and F3 (5% inulin).
Findings
Evaluated by 75 consumer panellists on 9-point hedonic scales, F3 showed significantly (p < 0.05) higher overall acceptability (5.79 ± 1.94) compared to control. In addition to lower calorie content (36.52 kcal/100 ml), nutritional and technological properties of F3 [total dietary fibre content (4.03 ± 0.04 g/100 ml), viscosity (28 ± 6.93 cP), viable count (87.00 ± 4.00 × 106 CFU/ml S. thermophilus; 14.67 ± 3.51 × 106 CFU/ml L. bulgaricus) and antioxidant activity (50.40 ± 1.80%)] were significantly (p < 0.05) improved compared to control. Remarkably, the new formulation complied with nutrient criteria for Healthier Choice Logo Malaysia in addition to meeting requirements for “low fat” and “high dietary fibre” contents according to Malaysia Guide to Nutrition Labelling and Claims. Hence, we conclude that 5% inulin improved nutritional and technological characteristic in synbiotic yogurt drink without compromising consumers' acceptance.
Originality/value
This novel study showcases the incorporation of prebiotic inulin in the development of synbiotic yogurt drink. Remarkably, this new formulation complied with the nutrient criteria for Healthier Choice Logo Malaysia in addition to meeting the requirements for “low fat” and “high dietary fibre” contents according to Malaysia Guide to Nutrition Labelling and Claims. More importantly, results have contributed knowledge to existing literature as well as benefits food manufacturers in creating healthy yogurt drinks to better meet the needs and expectations of health-conscious consumers without compromising hedonic perceptions.
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Suggests that though inulin is an oligosaccharide of dietaryinterest as a bifidogenic factor, little consideration appears to havebeen given to its behaviour in foods. Establishes…
Abstract
Suggests that though inulin is an oligosaccharide of dietary interest as a bifidogenic factor, little consideration appears to have been given to its behaviour in foods. Establishes that inulin would be entirely suitable for incorporation into natural or stirred fruit yogurt, in that it enhances the organoleptic properties of the product(s), and at inclusion levels which could be valuable from a nutritional standpoint.