Tsanangura:
Kuumbwa kwechikafu kunosanganisiracellulose ethers
Technical field:
Chigadzirwa chazvino chine chekuita nezvinyorwa zvekudya zvine cellulose ethers.
Background technique:
Yagara ichizivikanwa kuti inobatanidza cellulose ethers muzvinyorwa zvechikafu, kunyanya kugadzirwa kwechikafu, kuvandudza zvimiro zvakasiyana-siyana sechando-nyoro kugadzikana uye/kana magadzirirwo, kana kuvandudza kusimba panguva yekugadzira, michina yakagadzirwa kana yakakangwa. British patent application GB 2 444 020 inoburitsa zvinyorwa zvekudya zvakadaro zvinosanganisira nonionic cellulose ether yakadai semethylcellulose, hydroxypropyl cellulose, kana hydroxypropyl methylcellulose. Methylcellulose uye hydroxypropyl methylcellulose vane "thermos reversible gelling properties". Zvinonyatsotsanangurwa kuti kana mhinduro ine mvura yemethylcellulose kana hydroxypropyl methylcellulose ichipisa, boka re hydrophobic methoxy riri mumorekuru rinopera mvura, uye rinova gel rine mvura. Kune rumwe rutivi, kana gel rinoguma ratonhodzwa, mapoka e-hydrophobic methoxy anodzorerwa, apo gel inodzokera kune yekutanga aqueous solution.
European Patent EP I 171 471 inoburitsa methylcellulose iyo inobatsira zvakanyanya muzvinyorwa zvechikafu chakasimba semuriwo wakasimba, nyama, uye soya bean patties nekuda kwekuwedzera kwayo simba regel. Iyo methylcellulose inopa yakagadziridzwa kusimba uye kubatana kune yakasimba chikafu chinoumbwa, nekudaro ichipa kuruma kwakanaka kunzwa kune vatengi vanodya yakagadziriswa chikafu. Kana yakanyungudutswa mumvura inotonhora (semuenzaniso, 5 ° C kana pasi) isati yasvika kana mushure mekusanganiswa nezvimwe zvinoshandiswa zvekugadzirwa kwezvokudya, methylcellulose soy inosvika pakukwanisa kwayo kugovera zvinyorwa zvekudya zvakasimba nekusimba kwakanaka uye kubatana. kugona.
Zvisinei, mune dzimwe nguva, kushandiswa kwemvura inotonhora kunovhiringidza kune mugadziri wekugadzirwa kwezvokudya. Saizvozvo, zvingave zvinoshuvira kupa cellulose ethers iyo inopa kusimba kwechikafu zvinyorwa nekuomarara kwakanaka uye kubatana kunyangwe kana cellulose ethers yakanyungudika mumvura ine inenge tembiricha yekamuri.
Hydroxyalkyl methylcellulose senge hydroxypropyl methylcellulose (iyo inozivikanwa zvakare kuti inobatsira muzvinyorwa zvechikafu) inozivikanwa kuve ine yakaderera yekuchengetedza modulus kana ichienzaniswa nemethylcellulose. Hydroxyalkyl methylcelluloses inoratidzira yakaderera yekuchengetedza modulus haiumbe akasimba gels. Kuwedzera kwepamusoro kunodiwa kune kunyange majeri asina simba (Haque, A; Richardson; Morris, ER, Gidley, MJ naCaswell, DC muCarbohydrate Polymers22 (1993) p.175; uye Haque, A naMorris, ER1nCarbohydrate Polymers22 (1993) p.161).
Kana hydroxyalkyl methylcelluloses senge hydroxypropyl methylcellulose (iyo inoratidza yakaderera yekuchengetedza modulus) inosanganisirwa mune yakasimba chikafu maumbirwo, kuoma kwavo uye kubatana hakuna kukwirira zvakakwana kune mamwe maapplication.
Icho chinhu chekugadzirwa kwemazuva ano kupa hydroxyalkyl methylcellulose, kunyanya hydroxypropyl methylcellulose, iyo inofananidzwa neanozivikanwa hydroxyalkyl methylcelluloses, yakadai se hydroxypropyl methylcellulose Kusiyana neizvi, zvinyorwa zvekudya zvakasimba zvinopiwa nekuvandudza kusimba uye / kana kubatana.
Chinhu chinosarudzwa chekugadzirwa kwemazuva ano ndechekupa hydroxyalkyl methylcellulose, kunyanya hydroxypropyl methylcellulose, iyo inopa zvinyorwa zvekudya zvakasimba nekuoma kwakanaka uye / kana kubatana kunyange kana hydroxyalkyl methylcellulose.
Zvinoshamisa kuti zvakaonekwa kutihydroxyalkyl methylcellulose, kunyanya hydroxypropyl methylcellulose, inogona kushandiswa mukugadzirira kweKuenzaniswa nemitambo yezvokudya zvakasimba, zvinozivikanwa zvakasimba zvekudya zvinoumbwa zvine kuoma kwepamusoro uye / kana kubatana.
Uyezve zvinoshamisa, zvakaonekwa kuti mamwe hydroxyalkyl methylcelluloses, kunyanya hydroxypropyl methylcellulose, haifaniri kunyungudutswa mumvura inotonhora kuti ipe zvinyorwa zvekudya zvakasimba nekusimba kwakanaka uye / kana kubatana.
Nguva yekutumira: Kubvumbi-28-2024