stachyose


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Related to stachyose: sucrose

stach·y·ose

(stak'ē-ōs),
A raffinosegalactopyranoside; a tetrasaccharide that yields d-glucose, d-fructose, and 2 mol of d-galactose on hydrolysis; present in certain tubers and other plant tissues.

stachyose

(stăk′ē-ōs″)
A nonabsorbable carbohydrate present in beans. Because the substance is not absorbed or metabolized in the small intestine, it passes into the colon where it is acted on by bacteria to form gas. This may be related to the flatus produced by eating beans.
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Sucrose Raffinose Stachyose soybean China 1 5.35 0.52 1.93 2 5.75 0.57 1.85 3 4.65 0.39 1.46 4 5.04 0.46 1.5 5 5.58 0.66 2.03 Mean 5.27 0.52 1.75 USA 6 7.12 0.95 3.27 7 5.71 0.72 2.4 8 6.11 0.9 2.34 9 5.49 0.74 2.6 10 4.78 0.68 2.11 Mean 5.84 0.80 2.54 Brazil 11 4.09 0.96 1.58 12 3.73 0.85 1.29 13 3.01 0.99 1.22 14 5.08 1.25 2.14 15 3.36 0.73 1.18 Mean 3.85 0.96 1.48 DM, dry matter; GE, gross energy; CP, crude protein; EE, ether extract; AEE, acid hydrolysed ether extract; NDF, neutral detergent fiber; ADF, acid detergent fiber; CF, crude fiber.
SP6A-209 was F5 line carrying sts mutant allele with low stachyose and PI 542044 was germplasm with null trypsin inhibitor (KTI).
From the consistent results observed among the 3D-QSAR models validations, we inferred that adenosine triphosphate, manninotriose, raffinose, and stachyose of TCM candidates might have good biological activity for DHFR.
Stachyose, a tetrasaccharide with two galactose, one glucose and one fructose molecules, increased gradually in all coffee genotypes under low temperatures, as also noted by TAPERNOUX-LUTHI et al.
Preliminary attempts to compare its retention time with stachyose which, with other sugars of the raffinose family, such as verbascose, might be expected in the Cucurbitaceae (Lewis & Smith, 1967; Lewis, 1984) were unsuccessful.
Studies on content of sugars in soybean showed that sucrose content was positively correlated with raffinose content (r = 0.27) and negatively correlated with stachyose content (r = -0.35), and stachyose content was negatively correlated with raffinose content (r = -0.29) (Hymowitz et al., 1972).
"A selected combination of soaking, germinating, and enzyme treatment allows oligosaccharides (such as stachyose and raffinose) to be reduced by 35 to 60 percent, depending on the concentration of oligosaccharide that was present in the bean originally," says Dolan.
This is due to the relatively high concentrations of soluble dietary fibre and the carbohydrate stachyose (an [alpha]-galactoside) present in most beans (10).
Total fiber levels in common beatas range between 11.2 and 27.5% (Kozlowska, 2001; Tovar, 1994), which adds to oligosaccharides (raffinose, stachyose and verbascose) representing between 5 and 6% (Agustin and Klein, 1989), and to polyphenols (0.49-3.98%; Bravo et al., 1999), substances that were not evaluated in this investigation.
It is also present in "gassy" vegetables like cabbage, broccoli and cauliflower, along with the co-conspiratorial sugars stachyose and verbascose.
These sugars, including raffinose, stachyose, and verbascose, are indigestible because humans do not produce alphagalactosidase to break them down.