Stachyose

Définitions de « stachyose »

Stachyose - Nom commun

• (Biochimie) Oligosaccharide composé de deux unités de D-galactose et d'une unité de saccharose, reliées séquentiellement.

  La stachyose, cet oligosaccharide complexe formé de deux particules de D-galactose soudées à une unité de saccharose, est en réalité un maillon essentiel de notre chaîne alimentaire.

Évolution historique de l’usage du mot « stachyose » depuis 1800

Citations contenant le mot « stachyose »

• Ressemblant à un gros ver ou à une chenille, le crosne ne donne pas envie de le déguster mais on aurait tort de s’en priver. C’est LE légume d’hiver par excellence. Très peu calorique, il est riche en sels minéraux, protéines et glucides. Le cocktail idéal pour affronter les frimas hivernaux. Mais attention, ce légume racine peut occasionner des flatulences et des ballonnements car il contient de la stachyose, une molécule peu digeste. À consommer donc avec modération.

• Cependant, ces feuilles contiennent des facteurs anti-nutritionnel tels que : les sucres; craffinose et stachyose qui produisent des flatulences chez les mono-gastriques (Foidl et al.,2001) mais aussi les nitrates, l’oxalate, les saponines et les phytates (Reddy et al., 1982).

• The objective of this study was to investigate the effects of soy galactosides (GOS) raffinose and stachyose on the health and performance of young broilers (0-21 days). Birds were fed a GOS-devoid diet based on soy protein isolate (SPI) or supplemented with 0.9, 1.8, 2.7, or 3.6% GOS. These GOS levels were chosen to cover the range of levels that we can potentially face in real life.

• Recently, we have investigated the effect of increasing levels of the soy GOS, stachyose and raffinose, on the ceca microbial composition of broilers at 21 days of age as a potential indicator of “gut health” (Brown et al., 2022). Broilers were fed 1 of 5 experimental diets. A basal diet based on soy protein isolate (SPI) to be devoid of soy GOS, or the SPI diet with the addition of 0.9, 1.8, 2.7, or 3.6% total GOS as a mixture of stachyose and raffinose at a ratio of 4:1, similar to SBM. Inclusion rates used were to be consistent with typical GOS ranges observed in commercial broiler diets with variable SBM quality.

• We have previously described how the content of ANFs in SBM such as trypsin inhibitors, the indigestible oligosaccharides stachyose and raffinose and the antigen β-conglycinin negatively impact broiler performance (Blanch, 2020ab). Furthermore, the high degree of variability in nutrient composition of SBM makes accurate diet formulation a challenging task as table values do not necessarily represent the raw material used for a specific feed, which may also affect broiler performance (Brown, 2021).

• Soybeans contain the raffinose family of oligosaccharides (RFOs), which include three major oligosaccharides: raffinose, stachyose and verbascose. All three are characterized by the fact that they contain the sugar galactose in their basic structure. More precisely, raffinose contains one glucose, one fructose, and only one galactose unit. Stachyose is like raffinose, but with one extra unit of galactose. Similarly, verbascose is like raffinose, but with two extra units of galactose.

• In the last two years, Hamlet Protein has developed scientific studies aimed at determining the maximum levels of soybean meal (SBM) antinutritional factors (ANFs) that should be in broiler starter diets, leading to interesting findings, published in "The Poultry Site" in various articles. The most relevant SBM ANFs in poultry farming are trypsin inhibitor activity (TIA), the indigestible oligosaccharides stachyose and raffinose and the antigen beta-conglycinin.

Traductions du mot « stachyose »

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