Isingeniso kuma-Isomers e-Damascenone
I-Damascenone kanye ne-β-Damascenone ziyi-isomers ezimbili ezibalulekile zenhlanganisela yamakhemikhali efanayo, zombili ezisetshenziswa kabanzi embonini yamakha nokunambitheka. Ngenkathi zabelana ngefomula efanayo yama-molecule (C₁₃H₁₈O), izakhiwo zazo zamakhemikhali ezihlukile zibangela umehluko omkhulu kumaphrofayili ephunga kanye nokusetshenziswa kwalo. Lesi sihloko sinikeza ukuqhathanisa okuningiliziwe kwalezi zinhlanganisela ezimbili zamakha eziwusizo.
Umehluko Wesakhiwo Samakhemikhali
Umehluko omkhulu phakathi kwe-Damascenone (ngokuvamile i-α-Damascenone) kanye ne-β-Damascenone usezakhiweni zawo zama-molecule:
·α-Damascenone: Eyaziwa ngamakhemikhali ngokuthi (E)-1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-buten-1-one, enesibopho esiphindwe kabili esitholakala endaweni ye-α (ikhabhoni yesibili) yendandatho ye-cyclohexene
·β-Damascenone: Ngokwesakhiwo (E)-1-(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-buten-1-one, enezibopho eziphindwe kabili ezindaweni ze-β (ama-carbon okuqala nawesithathu) endandatho ye-cyclohexadiene
·I-Stereochemistry: Zombili zikhona njenge-(E) isomers (trans-configuration), ezithinta kakhulu izakhiwo zazo zokuhogela
Ukuqhathaniswa Kwezakhiwo Ezibonakalayo
| Impahla | i-α-Damascenone | i-β-Damascenone |
| Ubuningi | 0.942 g/cm³ | 0.926 g/cm³ |
| Indawo Yokubilisa | 275.6°C | 275.6°C |
| Inkomba Yokubukeza | 1.5123 | 1.49 |
| Ukubukeka | Uketshezi olungenambala kuya koluphuzi olukhanyayo | Uketshezi olungenambala kuya koluphuzi olukhanyayo |
| Ukuncibilika | Ayincibiliki emanzini, incibilika ezinyibilikisini eziphilayo | Ayincibiliki emanzini, incibilika ezinyibilikisini eziphilayo |
| Iphoyinti Elikhanyayo | >100°C | 111°C |
Umehluko Wephrofayili Enuka Kahle
Izici Zephunga Lika-α-Damascenone
·Inothi Eliyinhloko: Izithelo ezimnandi, eziluhlaza okotshani, ezinezimbali
·Amanothi Esibili: Izincazelo zezinkuni namajikijolo
·Umbono Ojwayelekile: Kuyinkimbinkimbi kakhulu ngekhwalithi entsha, efana neyesitshalo
Izici Zephunga Lika-β-Damascenone
·Inothi Eliyinhloko: Isici sezimbali esiqinile esifana ne-rose
Amanothi Esibili: I-Plum, i-grapefruit, i-raspberry, namanothi afana netiye
·Umbono Ophelele: Oqinile, ofudumele, ogcwele ukusabalala okungcono kanye nokuphila isikhathi eside
Umehluko Wohlelo Lokusebenza
Izicelo Eziyinhloko ze-α-Damascenone
I-perfumery ephezulu: Yengeza ubunzima nokujula ekwakhiweni kwamakha
Ukunambitheka kokudla: Kuvunyelwe njengesithasiselo sokudla (GB 2760-96)
Ukunambitheka kukagwayi: Kuthuthukisa ukushelela kwemikhiqizo kagwayi
Izicelo Eziyinhloko ze-β-Damascenone
Imboni yamakha: Ingxenye eyinhloko yama-rose accord kumaphunga amahle
Izithasiselo zokudla: Ezisetshenziswa kuma-confectionery, ezitsheni ezibhakiwe, naseziphuzweni
Ukunambitha ugwayi: Isithako esiyinhloko ezinambithekeni eziningi zikagwayi
Imikhiqizo yetiye: Iphunga eliyingqayizivele elitholakala kumatiye amnyama anephunga loju
Izehlakalo Zemvelo Nokubaluleka Kwezentengiselwano
Imithombo Yemvelo: Zombili zivela ngokwemvelo ku-rose oil, itiye elimnyama, kanye namafutha e-raspberry
Ukubaluleka Kwezentengiselwano: I-β-Damascenone ibusa imakethe ngenxa yezakhiwo zayo ezinhle kakhulu zephunga
Umehluko Wokuhlushwa: I-β-isomer ivame ukuba khona ekuhlushweni okuphezulu emikhiqizweni yemvelo
Ukwenziwa Nokukhiqizwa
·Izindlela Zokwenziwa: Zombili zingakhiqizwa ngokusabela kwe-Grignard kwe-β-cyclocitral kulandelwe yi-oxidation
··Inqubo Yokukhiqiza: Ukwenziwa kwe-α-Damascenone kuyinkimbinkimbi kakhulu futhi kuyabiza kakhulu
·Ukutholakala Kwemakethe: I-β-Damascenone itholakala kabanzi futhi ishibhile kakhulu
Isiphetho
Nakuba i-α-Damascenone kanye ne-β-Damascenone zinezakhiwo ezifanayo zamakhemikhali, indawo yezibopho zazo ezimbili iphumela kumaphrofayili nezinhlelo zokusebenza ezihlukile ze-aromatic. I-β-Damascenone, enesimo sayo sezimbali esifana ne-rose kanye nokusabalala kwayo okuphezulu, ibaluleke kakhulu kwezentengiselwano. Kodwa-ke, iphrofayili yephunga eliyinkimbinkimbi le-α-Damascenone igcina inani layo kwezinye izinhlelo zokusebenza eziphezulu. Ukuqonda lokhu mehluko kuvumela abenzi bamakha kanye nabapheki bezinongo ukuthi basebenzise i-isomer ngayinye ngempumelelo ekwakhiweni kwabo.
Isikhathi sokuthunyelwe: Novemba-10-2025