Kusiyana pakati pa hydroxypropyl starch ndi Hydroxypropyl methyl cellulose

Hydroxypropyl starch ndi hydroxypropyl methyl cellulose (HPMC) onse ndi ma polysaccharides osinthidwa omwe amagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikiza chakudya, mankhwala, zodzoladzola, ndi zomangamanga. Ngakhale amagawana zofanana, ali ndi kusiyana kosiyana malinga ndi kapangidwe ka mankhwala, katundu, ndi ntchito. Nazi kusiyana kwakukulu pakati pa hydroxypropyl starch ndi HPMC:

Kapangidwe ka Chemical:

1. Wowuma wa Hydroxypropyl:
   • Wowuma wa Hydroxypropyl ndi wowuma wosinthidwa womwe umapezeka poyambitsa magulu a hydroxypropyl pa molekyulu ya wowuma.
   • Wowuma ndi polysaccharide yopangidwa ndi mayunitsi a shuga olumikizidwa pamodzi ndi ma glycosidic bond. Hydroxypropylation imaphatikizapo kulowetsa m'malo mwa magulu a hydroxyl (-OH) mu molekyulu wowuma ndi magulu a hydroxypropyl (-CH2CHOHCH3).
2. Hydroxypropyl Methyl Cellulose (HPMC):
   • HPMC ndi ether yosinthidwa ya cellulose yomwe idapezedwa poyambitsa magulu onse a hydroxypropyl ndi methyl pa molekyulu ya cellulose.
   • Selulosi ndi polysaccharide yopangidwa ndi mayunitsi a shuga olumikizidwa pamodzi ndi β(1→4) glycosidic bond. Hydroxypropylation imayambitsa magulu a hydroxypropyl (-CH2CHOHCH3), pamene methylation imayambitsa magulu a methyl (-CH3) pamsana wa cellulose.

Katundu:

1. Kusungunuka:
   • Wowuma wa Hydroxypropyl nthawi zambiri amasungunuka m'madzi otentha koma amatha kusungunuka pang'ono m'madzi ozizira.
   • HPMC imasungunuka m'madzi ozizira komanso otentha, ndikupanga mayankho omveka bwino, owoneka bwino. The solubility wa HPMC zimadalira mlingo wa m'malo (DS) ndi molecular kulemera kwa polima.
2. Viscosity:
   • Wowuma wa Hydroxypropyl amatha kuwonetsa kukhuthala, koma kukhuthala kwake nthawi zambiri kumakhala kotsika poyerekeza ndi HPMC.
   • HPMC imadziwika chifukwa cha kukhuthala kwake komanso kusinthasintha kwamakamaka. The mamasukidwe akayendedwe a HPMC mayankho akhoza kusinthidwa ndi zosiyanasiyana polima ndende, DS, ndi maselo kulemera.

Mapulogalamu:

1. Chakudya ndi Mankhwala:
   • Wowuma wa Hydroxypropyl nthawi zambiri amagwiritsidwa ntchito ngati thickener, stabilizer, ndi gelling agent muzakudya monga soups, sauces, ndi ndiwo zochuluka mchere. Itha kugwiritsidwanso ntchito popanga mankhwala.
   • HPMC imagwiritsidwa ntchito kwambiri muzakudya, mankhwala, ndi zodzoladzola monga thickener, emulsifier, stabilizer, filimu kale, ndi ankalamulira-kutulutsa wothandizira. Nthawi zambiri amapezeka muzinthu monga mapiritsi, mafuta odzola, mafuta odzola, ndi zinthu zosamalira munthu.
2. Zomangamanga ndi Zomangamanga:
   • HPMC imagwiritsidwa ntchito kwambiri pantchito yomanga monga chowonjezera pazinthu zopangira simenti monga zomatira matailosi, matope, ma renders, ndi pulasitala. Amapereka kusungirako madzi, kugwira ntchito, kumamatira, komanso kuwongolera magwiridwe antchito awa.

Pomaliza:

Ngakhale kuti hydroxypropyl starch ndi HPMC ndi ma polysaccharides osinthidwa omwe ali ndi magwiridwe antchito ofanana, ali ndi kapangidwe kake, katundu, ndi ntchito. Wowuma wa Hydroxypropyl amagwiritsidwa ntchito makamaka muzakudya ndi zamankhwala, pomwe HPMC imagwiritsa ntchito kwambiri zakudya, mankhwala, zodzoladzola, ndi zomangira. Kusankha pakati pa wowuma wa hydroxypropyl ndi HPMC kumatengera zomwe mukufuna kugwiritsa ntchito.