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galactomannans show low gi snack potential
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nutritional snacks could profit from lower glycemic index values from the addition of galactomannan gums, according to a new study. the research, published in the journal food chemistry, suggests that the addition of galactomannan gums as a functional ingredient in health snacks could boost nutritional values, whilst providing snacks with gi values as low as 44. “with an increasing demand for snacks with lower gi, it is likely that these functional ingredients will become more important to the snack food industry,” wrote the researchers from the institute of food nutrition and human health, at massey university, new zealand. common additive galactomannans are polysaccharides made up of mannose and galactose in varying ratios, and are commonly used in foods as additives and stabilisers. guar gum (gg) has the highest use in foods because of its low and stable price. however, both gg and locust bean gum (lbg) are used to reduce melting and add texture to ice cream products - with lbg also commonly used in the production of cheese and salad dressings. fenugreek gum (fg) is a galactomannan that is extracted from fenugreek seeds, and is known for its medicinal benefits. the ratio’s of mannose to galactose in galactomannans is different in all gums – fenugreek gum has a mannose:galactose ratio of 1:1, guar gum has a 2:1 ratio, and locust bean gum a 4:1 ratio. the addition of galactomannan gums to a food can affect the mechanical, chemical, and structural properties of a food – and could also lower glycemic index (gi) values. according to the researchers of the new study, there has been little previous research into how galactomannan gums behave when incorporated into a snack product. functional properties the new study aimed to compare the functional characteristics of fg, gg, and lbg in pea-rice blends – testing their functional properties as part of a nutritional snack product. the research found that the addition of the gums (gg, lbg and fg) altered the physicochemical and nutritional quality of the extruded pea-rice snack products. the results observed good expansion and functional properties for the snack products when the three gums were added at levels of up to 20 per cent, with similar results for physical characteristics like colour and texture.
Source :foodnavigator.com
Date :
20
August
2010
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eating more heart-healthy omega-3 fats provided no additional benefit in a study of heart attack survivors who were already getting good care, dutch researchers report. after nearly 3 1/2 years, there was no difference in deaths, heart attacks and other heart problems between those who ate margarine with added omega-3 fatty acids and those who didn\'t, the study found.
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‘additive-free’ has, misleadingly, become synonymous with ‘healthy’, thanks to the clever marketing people who work in the food industry. to combat this there is going to be a three-part documentary on ‘e numbers’ on bbc two (uk) not, it seems, as another attempt to demonise the colours and preservatives used in some foods, but to dispel some of the myths surrounding additives. the term ‘e number’ is simply a reference given to food additives that have been approved for use in the eu and many of these are from natural sources - some of their familiar names include nitrogen, fatty acids, chlorophyll, pectin and vitamin c.
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cut-backs in food safety and hygiene training may be setting up a ‘food poisoning time bomb’, suggest results of a survey from the chartered institute of environmental health (cieh). around half of food safety trainers surveyed indicated that food safety training had been negatively affected by the economic climate, with 70 per cent of respondents noting that this was due to ‘cost cutting’ measures.
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canada has confirmed bisphenol a (bpa) is to be added to its national register of toxic substances after dismissing industry calls to review its stance on the chemical. environment canada (ec) remained unmoved by charges from the american chemistry council (acc) that a failure to hold a review would leave it open to charges of pandering to emotional zealots and damage its reputation. the government body told foodproductiondaily.
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uk food safety watchdog, the food standards agency (fsa) is to review strategies designed to reduce the shedding of e. coli 0157 by ruminant livestock. in partnership with the department for the environment, food and rural affairs (defra), the food safety watch dog plans to commission an evidence review of the efficacy of control measures designed to prevent e. coli 0157.
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in the fourth excerpt from a nutraingredients health claims roundtable, our experts discuss the possibility that the 2006 nutrition and health claims regulation may end up being challenged in an institution like the european court of justice. at the table were henry dixon, the owner of uk-based food industry pr firm, barrett dixon bell; patrick coppens, a regulatory expert from european advisory services in brussels and cedric bourges from the french claims consultancy, nutraveris.
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