Qhov txawv ntawm Qab Zib thiab Starch

2024 Tus sau: Alex Aldridge | [email protected]. Kawg hloov kho: 2023-12-17 13:40

Starch vs Sugar

Starch thiab qab zib yog ob hom carbohydrates pom hauv cov zaub mov. Carbohydrates yog cov organic tebchaw, ua los ntawm carbon (c), hydrogen (H), thiab oxygen (O) nyob rau hauv piv ntawm ib tug oxygen atom thiab ob hydrogen atoms rau txhua txhua carbon atom (CH _{2 O). Qhov sib piv no yog yam ntxwv rau txhua tus thiab txhua tus carbohydrate. Piv txwv li, cov piam thaj qab zib muaj cov tshuaj formula C}6_H12_O6_{, qhov twg C:H.:O yog nyob rau hauv qhov ratio ntawm 1: 2: 1. Qab Zib yog lub monomer chav tsev ntawm complex carbohydrates. Cov piam thaj molecules tau sib sau ua ke los tsim cov carbohydrates nyuaj. Muaj ob hom carbohydrates pom hauv cov zaub mov, (1) yooj yim carbohydrates; uas suav nrog cov suab thaj, thiab (2) complex carbohydrates; uas muaj xws li starches thiab fiber.}

Starch

Starch yog polysaccharides uas muaj cov carbohydrate ntev chains ntawm qabzib. Nroj tsuag khaws cov hmoov txhuv nplej siab raws li lawv lub zog qhov chaw, uas yog siv thaum cog kev loj hlob thiab kev loj hlob. Muaj ntau hom hmoov txhuv nplej siab khaws cia hauv cov nroj tsuag, suav nrog nplej, legumes, thiab tubers. Ob hom hmoov txhuv nplej siab pom hauv cov nroj tsuag yog amylose thiab amylopectin. Amylose yog tsim los ntawm ntev, unbranched chains ntawm qabzib molecules, whereas amylopectin yog tsim los ntawm ntev, branched chains ntawm qabzib molecules. Hauv cov nroj tsuag, amylose rau amylopectin piv yog kwv yees li 1: 4, tab sis qhov kev faib ua feem tuaj yeem sib txawv nyob ntawm hom nroj tsuag. Piv txwv li, cov hmoov nplej muaj cov amylose ntau, thaum cov hmoov nplej muaj ntau ntawm amylopectin.

Sugar

Qab Zib yog cov carbohydrates yooj yim, uas muaj ib qho qab zib molecule lossis ob lub suab qab zib ua ke. Raws li qhov ntawd, cov suab thaj yooj yim tuaj yeem muab faib ua ob pawg; monosaccharides thiab disaccharides. Monosaccharides yog cov suab thaj uas tsis tuaj yeem tawg thaum lub sijhawm zom zaub mov. Feem ntau peb hom monosaccharides yog qabzib , fructose, thiab galactose. Tag nrho cov suab thaj no muaj tib yam tshuaj formula C₆H₁₂O₆, tab sis txawv atomic npaj. Disaccharides yog cov suab thaj uas muaj ob chav monosaccharide txuas ua ke los ntawm glycosidic daim ntawv cog lus. Peb qhov disaccharides tseem ceeb hauv tib neeg cov khoom noj yog sucrose(cov lus qab zib ntau), lactose(cov suab thaj loj hauv mis), thiab m altose (cov khoom lag luam ntawm hmoov txhuv nplej siab). Cov suab thaj yooj yim no muaj nyob hauv cov txiv hmab txiv ntoo, mis nyuj thiab lwm yam khoom noj thiab tuaj yeem ua raws li monomers, uas txuas ua ke los tsim cov carbohydrates yooj yim hu ua polysaccharides.

Dab tsi yog qhov txawv ntawm Starch thiab Qab Zib?

• Starch yog complex carbohydrate, whereas qab zib yog ib qho yooj yim carbohydrate.

• Cov hmoov txhuv nplej siab yog tsim los ntawm cov hlua ntev ntawm cov suab thaj yooj yim hu ua qabzib, qhov qab zib tuaj yeem tsim los ntawm ib qho qab zib molecule lossis ob qho yooj yim qab zib molecules txuas ua ke los ntawm glycosidic daim ntawv cog lus.

• Ob hom hmoov txhuv nplej siab yog amylose thiab glycogen, whereas ob hom suab thaj yog monosaccharide thiab disaccharide.

• Starch tuaj yeem zom ntxiv rau hauv cov suab thaj yooj yim, tsis zoo li cov piam thaj (monosaccharide).

• Polymerization ntawm cov suab thaj yooj yim (glucose) ua cov hmoov txhuv nplej siab.

• Starch yog qhov chaw cia ntawm lub zog, qhov qab zib yog lub zog ncaj qha..

• Starch tsis muaj qab zib, tab sis qab zib ua.

• Qab Zib tsis muaj lossis ib qho glycosidic daim ntawv cog lus, whereas starch muaj ntau glycosidic bonds.