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==Common disaccharides== :{| class="wikitable" |- ! Disaccharide ! Unit 1 ! Unit 2 ! Bond |- | [[Sucrose]] (table sugar, cane sugar, beet sugar, or saccharose) | [[Glucose]] || [[Fructose]] || α(1→2)β |- | [[Lactose]] (milk sugar) | [[Galactose]] || Glucose || β(1→4) |- | [[Maltose]] (malt sugar) | Glucose || Glucose || α(1→4) |- | [[Trehalose]] | Glucose || Glucose || α(1→1)α |- | [[Cellobiose]] | Glucose || Glucose || β(1→4) |- | [[Chitobiose]] | [[Glucosamine]] || Glucosamine || β(1→4) |} Maltose, cellobiose, and chitobiose are [[hydrolysis]] products of the polysaccharides [[starch]], [[cellulose]], and [[chitin]], respectively. Less common disaccharides include:<ref>{{cite journal |author=Parrish |first1=F.W. |last2=Hahn |first2=W.B. |last3=Mandels |first3=G.R. |date=July 1968 |title=Crypticity of Myrothecium verrucaria Spores to Maltose and Induction of Transport by Maltulose, a Common Maltose Contaminant |url= |journal=J. Bacteriol. |publisher=American Society for Microbiology |volume=96 |issue=1 |pages=227–233 |doi=10.1128/JB.96.1.227-233.1968 |pmc=252277 |pmid=5690932 |doi-access=free}}</ref> :{| class="wikitable" |- ! Disaccharide ! Units ! Bond |- | [[Kojibiose]] || Two [[glucose]]s || α(1→2)<ref>{{cite journal | last1 = Matsuda | first1 = K. |date=November 1957 | title = Kojibiose (2-O-alpha-D-Glucopyranosyl-D-Glucose): Isolation and Structure: Chemical Synthesis | journal = Nature | volume = 180 | pages =985–6 | doi=10.1038/180985a0 | pmid = 13483573 | last2 = Abe | first2 = Y | last3 = Fujioka | first3 = K | issue = 4593 | bibcode = 1957Natur.180..985M | doi-access = free }} </ref> |- | [[Nigerose]] || Two glucoses || α(1→3) |- | [[Isomaltose]] || Two glucoses || α(1→6) |- | β,β-Trehalose || Two glucoses || β(1→1)β |- | α,β-Trehalose || Two glucoses || α(1→1)β<ref>{{cite journal|journal=Acta Crystallogr. C|volume=53|pages=234–236|doi=10.1107/S0108270196012693|year=1997|author=T. Taga|author2=Y. Miwa|author3=Z. Min|title=α,β-Trehalose Monohydrate|issue=2}}</ref> |- | [[Sophorose]] || Two glucoses || β(1→2) |- | [[Laminaribiose]] || Two glucoses || β(1→3) |- | [[Gentiobiose]] || Two glucoses || β(1→6) |- | [[Trehalulose]] | One glucose and one [[fructose]] | α(1→1) |- | [[Turanose]] || One glucose and one fructose || α(1→3) |- | Maltulose || One glucose and one fructose || α(1→4) |- | Leucrose || One glucose and one fructose || α(1→5) |- | [[Isomaltulose]] || One glucose and one fructose || α(1→6) |- | Gentiobiulose || One glucose and one fructose || β(1→6) |- | [[Mannobiose]] || Two [[mannose]]s || Either α(1→2), α(1→3), α(1→4), or α(1→6) |- | [[Melibiose]] || One [[galactose]] and one glucose || α(1→6) |- | [[Allolactose]] || One galactose and one glucose || β(1→6) |- | [[Melibiulose]] || One galactose and one fructose || α(1→6) |- | [[Lactulose]] || One galactose and one fructose || β(1→4) |- | [[Rutinose]] || One [[rhamnose]] and one glucose || α(1→6) |- | Rutinulose || One rhamnose and one fructose || β(1→6) |- | [[Xylobiose]] || Two xylopyranoses || β(1→4) |}
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