Ka uru tēnei ki ngā āhuatanga matū motuhake e tautuhi ana i te kounga me te āhua o te Milk Lactone.
Anei tētahi whakamārama taipitopito:
1. Te Matū: He aha te Hiranga o te Isomerism i roto i ngā Lactones
Mō ngā lactones pērā i te δ-Decalactone, kāore te tohu "cis" me te "trans" e pā ana ki te hononga takirua (pērā i roto i ngā ngota pērā i te waikawa ngako) engari ki te stereochemistry whanaunga i ngā pokapū chiral e rua i runga i te mowhiti. Ka hangaia e te hanganga mowhiti he āhuatanga e rerekē ai te whakatakotoranga ā-wāhi o ngā ngota hauwai me te mekameka alkyl e pā ana ki te papa mowhiti.
· cis-Isomer: Kei te taha kotahi o te papa mowhiti ngā ngota hauwai i runga i ngā ngota waro e tika ana. Mā tēnei ka puta he āhua motuhake, he āhua here ake.
· trans-Isomer: Kei ngā taha rerekē o te papa mowhiti ngā ngota hauwai. Ka hangaia he āhua ngota rerekē, he iti ake te taumahatanga.
Nā ēnei rerekētanga ngawari o te āhua ka hua ake he rerekētanga nui ki te taunekeneke a te ngota ngota ki ngā kaiwhakawhiwhi kakara, ā, nō reira, ki tōna āhua kakara.
2. Te ōwehenga o te mea taiao me te mea hangaiMiraka Lactone
Pūtake Te ōwehenga o te ira cis noa Te ōwehenga o te ira trans noa Te take matua
Taiao (mai i te Miraka) > 99.5% (100% Whai Hua) < 0.5% (He iti noa iho, kāore rānei) He tino motuhake te ara hanga whākōkī i roto i te kau, ā, ko te āhua (R) anake e hua ake ai te cis-lactone.
Hanganga ~70% – 95% ~5% – 30% Ko te nuinga o ngā ara hanga matū (hei tauira, mai i ngā matū hinu, i te waikawa ricinoleic rānei) kāore i te tino motuhake, ka hua ake he ranunga o ngā isomers (he racemate). Ko te ōwehenga tika e whakawhirinaki ana ki te tukanga motuhake me ngā mahi purenga.
3. Pānga Ā-Kare: He aha te Hiranga o te Isomera cis
Ehara tēnei ōwehenga isomer i te mea he āhuatanga matū noa iho; he pānga tika, he pānga kaha hoki tōna ki te kounga o ngā kare ā-roto:
· cis-δ-Decalactone: Koinei te isomer me te kakara tino rongonui, kaha, kirimi, rite ki te pītiti, me te miraka. Koinei te matū pānga-āhua mōMiraka Lactone.
· trans-δ-Decalactone: He ngoikore rawa atu tēnei isomer, he iti ake te āhua, ā, i ētahi wā he kakara "kakariki" he kakara "ngako" rānei. He iti noa iho te pānga ki te āhua kirīmi e hiahiatia ana, ā, ka taea e ia te whakapōrearea, te whakapē rānei i te parakore o te kakara.
4. Ngā Pānga ki te Ahumahi Reka me te Kakara
Ko te ōwehenga o te isomer cis ki te isomer trans he tohu matua mō te kounga me te utu:
1. Ngā Lactone Taiao (mai i te Miraka): Nā te mea he 100% cis, he kakara pono, he kaha, he kakara e hiahiatia ana. Ko ēnei anō hoki ngā mea tino utu nui nā te utu nui o te tukanga tango mai i ngā puna miraka.
2. Ngā Lactone Hanga Kounga-Teitei: Ka whakamahi ngā kaihanga i ngā tikanga matū matatau, i ngā tikanga whākōkī rānei hei whakanui ake i te hua o te isomer cis (hei tauira, te whakatutuki i te 95%+). He maha ngā wā ka tohua e te COA mō te lactone hanga kounga teitei he ihirangi cis teitei. He tawhā nui tēnei e tirohia ana e ngā kaihoko.
3. Ngā Lactone Hanga Paerewa: Ko te iti o te ihirangi cis (hei tauira, 70-85%) e tohu ana i te hua kāore i te tino pai. Ka ngoikore ake, ka iti ake te pono o te kakara, ā, ka whakamahia i roto i ngā tono e matua ana te utu, ā, kāore e hiahiatia te kakara kounga teitei.
Whakamutunga
Hei whakarāpopototanga, ehara te ōwehenga i te tau pumau engari he tohu matua mō te takenga mai me te kounga:
· I roto i te taiao, he tino piko te ōwehenga ki te >99.5% cis-isomer.
· I roto i te hanganga, ka rerekē te ōwehenga, engari ko te nui ake o te cis-isomer e hono tika ana ki te kakara kirīmi pai ake, taiao ake, me te kaha ake.
Nō reira, i te aromatawai i tētahi tauira oMiraka Lactone, ko te ōwehenga cis/trans tētahi o ngā whakatakotoranga tino nui hei arotake i runga i te Tiwhikete Tātari (COA).
Wā tuku: Hepetema-26-2025