Qhov sib txawv tseem ceeb ntawm agar thiab carrageenan yog agar yog muab rho tawm los ntawm Gelidium thiab Gracilaria thaum carrageenan yog muab rho tawm los ntawm Chondrus crispus.
Agar thiab carrageenan yog ob lub ntuj hydrocolloids tau los ntawm seaweed, feem ntau yog los ntawm liab algal hom. Txij li ob qho tib si muaj cov cuab yeej gelling, lawv tau siv ntau hom kev npaj zaub mov. Agar yog qhov zoo tshaj plaws lub npe hu ua ib tug solidifying tivthaiv ntawm bacteriological xov xwm. Gelidium thiab Gracilaria yog ob lub algae liab siv los rho tawm agar thaum carrageenan feem ntau muab rho tawm los ntawm cov seaweed liab Chondrus crispus. Agar yog ib yam khoom siv gelatinous siv hauv icing, glazes, tiav cheese, jelly thiab khoom qab zib. Agar feem ntau yog siv rau hauv microbiology thiab biotechnology daim ntaub ntawv ib yam nkaus. Carrageenan yog polysaccharide siv hauv cov khoom qab zib, ice cream, kua ntses, pates, npias, cov nqaij ua tiav thiab kua mis.
Agar yog dab tsi?
Agar yog ib qho ntuj hydrocolloid, uas yog cov khoom siv gelatinous. Agar yog muab rho tawm los ntawm ob genera ntawm liab algae (seaweeds) li Gelidium thiab Gracilaria. Thawj seaweeds yog ntxuav thiab ntxuav kom huv si thiaj li yuav tshem tawm tej yam txawv teb chaws xws li xuab zeb, ntsev, los yog tej khib nyiab. Tom qab ntawd cov seaweeds tau rhaub hauv dej rau ob peb teev kom txog thaum agar dissolves hauv dej. Qhov sib tov no yog lim kom tshem tawm cov seaweed seem. Cov filtrate yog txias los ua ib lub gel uas muaj agar. Tom qab ntawd cov gel tau tawg thiab ntxuav kom tshem tawm cov ntsev ntsev. Thaum kawg, peb tshem cov dej tshem tawm thiab txiav cov agar mus rau qhov loj me me.
Daim duab 01: Agar
Agar dissolves nyob rau hauv boiling dej. Nws tsim cov gel ntawm 32 thiab 43 ° C. Cov gel no tsis yaj kom txog thaum nws kub txog 85 ° C lossis siab dua. Ntau tshaj 90% ntawm cov khoom siv agar yog siv rau kev siv khoom noj - rau icing, glazes, tiav cheese, jelly thiab khoom qab zib, thiab lwm yam. So yog siv nyob rau hauv microbiological thiab lwm yam biotechnology daim ntaub ntawv.
Carrageenan yog dab tsi?
Carrageenan yog lwm yam hydrocolloid ntuj, muab rho tawm los ntawm liab algae hom Chondrus crispus. Nws yog polysaccharide. Muaj ob hom carrageenan li refined carrageenan (RC) thiab semirefined carrageenan (SRC). Semirefined carrageenan muaj cellulose, uas muaj nyob rau hauv thawj seaweed, thaum refined carrageenan tsis muaj cellulose. Cellulose tau raug tshem tawm los ntawm kev pom.
Daim duab 02: Chondrus crispus
Zoo ib yam li agar, carrageenan muaj gelling khoom. Nws kuj muaj cov khoom emulsifying. Yog li, carrageenan yog siv los ua zaub mov ntxiv es tsis txhob gelatin thiab agar. Hauv cov khoom noj ua tiav, carrageenan yog siv rau stabilization, thickening thiab gelation. Carrageenan kuj tseem siv rau hauv kev npaj ice cream, chocolate mis nyuj, custards, cheeses, jellies, confectionery khoom, nqaij thiab kom meej meej ntawm npias thiab caw. Carrageenan feem ntau muaj nyob rau hauv txiv ntseej mis nyuj, nqaij cov khoom, thiab yogurt.
Dab tsi zoo sib xws ntawm Agar thiab Carrageenan?
- Agar thiab carrageenan yog ob lub hydrocolloids.
- YLawv yog tsim los ntawm polysaccharides.
- Lawv muab rho tawm los ntawm cov kab liab liab.
- Seaweeds raug ntxuav kom tshem tawm cov xuab zeb, ntsev thiab lwm yam khoom txawv teb chaws thaum lub sijhawm rho tawm.
- Ob leeg muaj gelling khoom.
- Lawv siv rau hauv kev npaj zaub mov.
- Ob leeg yog kev lag luam muab rho tawm thiab ua lag luam.
- Agar thiab carrageenan tsis muaj khoom noj khoom haus.
Qhov txawv ntawm Agar thiab Carrageenan yog dab tsi?
Agar yog lub ntuj hydrocolloid muab rho tawm los ntawm seaweed thaum carrageenan yog ib qho ntuj hydrocolloid siv los ua zaub mov ntxiv hauv kev lag luam khoom noj rau lawv cov gelling, thickening, thiab stabilizing zog. Gelidium thiab Gracilaria yog ob lub algae liab siv los rho tawm agar thaum Chondrus crispus yog liab algae siv los rho tawm carrageenan. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm agar thiab carrageenan.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm agar thiab carrageenan.
Summary – Agar vs Carrageenan
Agar thiab carrageenan yog ob lub ntuj hydrocolloids uas tau muab rho tawm los ntawm cov algae liab. Lawv tsis muaj zaub mov muaj nqis. Ob leeg muaj cov cuab yeej gelling, thiab lawv tau siv ntau hom kev npaj zaub mov. Agar yog muab rho tawm los ntawm Gelidium thiab Gracilaria thaum carrageenan yog muab rho tawm los ntawm Chondrus crispus. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm agar thiab carrageenan.
