Phapang lipakeng tsa hydroxypropyl starch le Hydroxypropyl methyl cellulose

Hydroxypropyl starch le hydroxypropyl methyl cellulose (HPMC) ka bobeli ke li-polysaccharides tse fetotsoeng tse sebelisoang liindastering tse fapaneng, ho kenyeletsoa lijo, meriana, litlolo le kaho. Ha li ntse li arolelana lintho tse ling tse tšoanang, li na le phapang e fapaneng ho latela sebopeho sa lik'hemik'hale, thepa le ts'ebeliso. Mona ke phapang e kholo lipakeng tsa hydroxypropyl starch le HPMC:

Sebopeho sa Lik'hemik'hale:

1. Setache sa Hydroxypropyl:
   • Hydroxypropyl starch ke starch e fetotsoeng e fumanoang ka ho hlahisa lihlopha tsa hydroxypropyl holim'a molek'hule ea starch.
   • Starch ke polysaccharide e entsoeng ka li-unit tsa tsoekere tse hokahaneng ka li-bond tsa glycosidic. Hydroxypropylation e kenyelletsa ho nkela sebaka sa lihlopha tsa hydroxyl (-OH) ka molek'hule ea starch ka lihlopha tsa hydroxypropyl (-CH2CHOHCH3).
2. Hydroxypropyl Methyl Cellulose (HPMC):
   • HPMC ke ether ea cellulose e fetotsoeng e fumanoeng ka ho hlahisa lihlopha tsa hydroxypropyl le methyl ka har'a molek'hule ea cellulose.
   • Cellulose ke polysaccharide e entsoeng ka likaroloana tsa tsoekere tse hokahantsoeng ka libonto tsa β(1→4) tsa glycosidic. Hydroxypropylation e hlahisa lihlopha tsa hydroxypropyl (-CH2CHOHCH3), ha methylation e hlahisa lihlopha tsa methyl (-CH3) mokokotlong oa cellulose.

Thepa:

1. Sollubility:
   • Hydroxypropyl starch hangata e qhibiliha ka metsing a chesang empa e ka bonts'a ho qhibiliha ho fokolang metsing a batang.
   • HPMC e qhibiliha ka metsing a batang le a chesang, a etsa litharollo tse hlakileng, tse hlakileng. The solubility ea HPMC itšetlehile ka tekanyo ea ho fetola (DS) le boima ba molek'hule ea polymer.
2. Viscosity:
   • Hydroxypropyl starch e kanna ea bonts'a thepa e ntlafatsang viscosity, empa viscosity ea eona hangata e tlase ha e bapisoa le HPMC.
   • HPMC e tsejoa ka thepa ea eona e ntle ea ho tenya le ho fetola viscosity. Viscosity ea tharollo ea HPMC e ka fetoloa ka ho fapanyetsana mahloriso a polymer, DS, le boima ba limolek'hule.

Lisebelisoa:

1. Lijo le Litlhare:
   • Hydroxypropyl starch e atisa ho sebelisoa e le setei, stabilizer, le gelling agent lihlahisoa tsa lijo tse kang sopho, li-sauces le li-dessert. E ka boela ea sebelisoa mefuteng ea meriana.
   • HPMC e sebelisoa haholo lijong, meriana, le litlolo e le setenya, emulsifier, stabilizer, filimi ea pele, le moemeli oa tokollo e laoloang. Hangata e fumanoa lihlahisoa tse kang matlapa, litlolo, litlolo, le lintho tsa tlhokomelo ea botho.
2. Lisebelisoa tsa Kaho le tsa Kaho:
   • HPMC e sebelisoa haholo indastering ea kaho e le tlatsetso ea lihlahisoa tse thehiloeng ho samente joalo ka likhomaretsi tsa lithaele, lirekere, li-renders le li-plaster. E fana ka ho boloka metsi, ho sebetsa, ho khomarela, le ts'ebetso e ntlafetseng lits'ebetsong tsena.

Qetello:

Leha ka bobeli hydroxypropyl starch le HPMC e le li-polysaccharides tse fetotsoeng tse nang le ts'ebetso e ts'oanang, li na le libopeho tse fapaneng tsa lik'hemik'hale, thepa le ts'ebeliso. Hydroxypropyl starch e sebelisoa haholo lijong le lits'ebetsong tsa meriana, ha HPMC e fumana tšebeliso e ngata lijong, meriana, litlolo le thepa ea kaho. Khetho pakeng tsa hydroxypropyl starch le HPMC e itšetlehile ka litlhoko tse khethehileng tsa kopo e reriloeng.