INGREDIENTS & ADDITIVES 13
Making a case for health benefits
of sesame seeds and konjac gum
hile the benefits of fibre in the improved regulation of lipid metabolism, and
Manufacturers are
diet have long been known, the prevention and treatment of constipation
sharpening their focus on
food manufacturers are showing and obesity. KGM achieves this, says the
two well-known foodstuffs
W
renewed interest in two company, as a result of its physicochemical
following publication of
particular food substances following the release properties including water solubility, thickening,
Dutch research showing
that konjac gum and
of new research results from the Netherlands. stabilising, jelling and suspending, and film
sesame seed extract may
Published in the latest issue of the Society of forming.
reduce gastrointestinal
the Chemical Industry (SCI) Journal of the Science For its part, extracts of sesame seed are
problems. Sean Ottewell
of Food and Agriculture (88, pp2026-2035), the already used in various food supplements, often
reports. study by Petra Becker and others from in conjunction with other fruit extracts such as
Wageningen University and Research Centre in those from olives. The claim here is that they
the Netherlands shows that konjac gum and help to slow down systemic inflammation
L’attention des fabricants
sesame seed extract may offer protection against associated with old age – notably those caused by
se concentre sur deux
different strains of E coli and Salmonella bacteria. cytokines and prostaglandins
denrées alimentaires
bien connues, suite à
Konjac is a plant of the genus Amorphophallus The Dutch results show that these foodstuffs
la publication par des
and is native to subtropical and tropical eastern act as binders for E coli and Salmonella bacteria:
chercheurs hollandais
Asia. It is often grown in these parts of the world the bacteria attach themselves to the fibrous
d’une étude montrant for its starchy corm which is used to create a foods instead of the gut cells of the host.
qu’un extrait de gomme flour and jelly of the same name. Vegans can Becker says that eating a diet full of these
de konjac et de graines de
also used it as a substitute for gelatin. foodstuffs may offer protection from gastro-
sésame pourrait réduire
Konjac is mostly made up of glucomannan, a intestinal infections or reduce the severity of
les problèmes
polysaccharide formed when glucose and symptoms caused by E coli or Salmonella.
gastro-intestinaux. Un
reportage de
mannose are polymerised. According to one In the lab study that also included negative
Sean Ottewell.
manufacturer, Acroyali in Qingdao, China, controls, the scientists looked at 18 food-related
konjac glucomannan (KGM) is a high-quality products including coffee beans, carrot, mango,
soluble dietary fibre that has the function of fermented soya, and food stabilisers such as
Nach der Veröffentlichung ‘regulating the nutrient imbalance’. locust bean gum and konjac gum. All were
von niederländischen
Acroyali highlights a number of ways in subjected to in-vitro exposure to various bacteria
Studienergebnissen,
which this happens, including a ‘remarkable’ that were allowed to attach themselves to the test
die zeigten, dass
reduction in blood sugar and cholesterol levels, products.
Konjacgummi und
☞
Sesamextrakt
bei Magen-Darm-
Table 1. Mannan structures and contents in different materials.
Problemen förderlich
Plant/yeast material Mannan/mannose content (in dry matter)
sind, rücken diese
beiden wohlbekannten
Oil palm seeds 59 per cent mannan in palm kernel meal
Nahrungsmittel immer
stärker ins Blickfeld der
Coffee beans
16 per cent mannose (roasted beans), 25 per cent (green beans)
Hersteller. Sean Ottewell
berichtet. Sesame seeds
About 83 per cent mannose in cell wall polysaccharide extract of
endosperm
Yeast 5-55 per cent mannose in cell wall
Carob seeds 32-40 per cent mannan in seeds
Soybean meal Two per cent mannan (non-dehulled), one per cent (dehulled)
Tomato seeds and pericarp Mannose is main component in endosperm cell walls; ripe pericarp cell wall
material contains about 5 per cent mannose
Konjac corm ≥75 per cent in E425i, konjac gum
Sunflower meal 3 per cent mannan
www.scientistlive.com
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