Musiyano pakati pehydroxypropyl starch neHydroxypropyl methyl cellulose

Hydroxypropyl starch uye hydroxypropyl methyl cellulose (HPMC) ese ari maviri akagadziridzwa polysaccharides anoshandiswa mumaindasitiri akasiyana, anosanganisira chikafu, mishonga, zvizorwa, uye kuvaka. Kunyange vachigovana zvimwe zvakafanana, vane misiyano yakasiyana maererano nechimiro chemakemikari, zvivakwa, uye mashandisirwo. Heano misiyano mikuru pakati pehydroxypropyl starch neHPMC:

Chemical Structure:

1. Hydroxypropyl Starch:
   • Hydroxypropyl starch is a modified starch inowanikwa nekuunza hydroxypropyl mapoka pane starch molecule.
   • Starch ipolysaccharide inoumbwa nemayuniti eglucose akabatanidzwa pamwechete neglycosidic bond. Hydroxypropylation inosanganisira kutsiviwa kwe hydroxyl (-OH) mapoka mu starch molecule ine hydroxypropyl (-CH2CHOHCH3) mapoka.
2. Hydroxypropyl Methyl Cellulose (HPMC):
   • HPMC ndeye yakagadziridzwa cellulose ether yakawanikwa nekuunza ese maviri hydroxypropyl uye methyl mapoka pane cellulose morekuru.
   • Cellulose i polysaccharide inoumbwa neglucose units akabatanidzwa pamwechete ne β(1→4) glycosidic bonds. Hydroxypropylation inopinza hydroxypropyl (-CH2CHOHCH3) mapoka, nepo methylation inosuma methyl (-CH3) mapoka pamusana we cellulose.

Properties:

1. Solubility:
   • Hydroxypropyl starch inowanzonyungudika mumvura inopisa asi inogona kuratidza kushomeka kunyungudika mumvura inotonhora.
   • HPMC inonyungudika mumvura inotonhora uye inopisa, ichigadzira mhinduro dzakajeka, viscous. Kunyungudika kweHPMC kunoenderana nedanho rekutsiva (DS) uye huremu hwemamorekuru epolymer.
2. Viscosity:
   • Hydroxypropyl starch inogona kuratidza viscosity-enhancing zvivakwa, asi viscosity yayo kazhinji yakadzikira kana ichienzaniswa neHPMC.
   • HPMC inozivikanwa nekunaka kwayo kukora uye viscosity-kugadzirisa zvivakwa. Iyo viscosity yeHPMC mhinduro inogona kugadziridzwa nekusiyanisa iyo polymer concentration, DS, uye molecular uremu.

Applications:

1. Zvokudya neMishonga:
   • Hydroxypropyl starch inowanzoshandiswa seyakakora, stabilizer, uye gelling agent muzvigadzirwa zvekudya senge soups, sosi, uye madhiri. Inogonawo kushandiswa mukugadzirwa kwemishonga.
   • HPMC inoshandiswa zvakanyanya mukudya, mishonga, uye zvizorwa seyakakora, emulsifier, stabilizer, yekare firimu, uye inodzorwa-kuburitsa mumiririri. Inowanzo kuwanikwa muzvigadzirwa zvakaita semapiritsi, mafuta ekuzora, makirimu, uye zvinhu zvekuchengeta munhu.
2. Kuvaka uye Zvishandiso zvekuvaka:
   • HPMC inoshandiswa zvakanyanya muindastiri yekuvaka sekuwedzera mune zvigadzirwa-simende senge mataira anonamira, dhaka, renders, uye plasters. Inopa kuchengetedza kwemvura, kushanda, kunamatira, uye kuvandudzwa kwekuita mumashandisirwo aya.

Mhedziso:

Nepo ese ari maviri hydroxypropyl starch neHPMC akagadziridzwa mapolysaccharides ane mashandiro akafanana, ane akasiyana makemikari zvimiro, zvimiro, uye mashandisiro. Hydroxypropyl starch inonyanya kushandiswa muchikafu nemishonga yekushandisa, nepo HPMC ichiwana kushandiswa kwakawanda muchikafu, mishonga, zvizorwa, uye zvekuvakisa. Sarudzo pakati pehydroxypropyl starch neHPMC zvinoenderana nezvinodiwa chaizvo zvechishuwo chakatarisirwa.