Te haumaru o te methylcellulose i roto i te kai

1. Ngā āhuatanga me ngā mahi a te methylcellulose

Ko te hanganga ngota o te methylcellulose e hangai ana kiβKo te waeine -1,4-kurukose, ka hangaia mā te whakakapi i ētahi rōpū hydroxyl ki ngā rōpū methoxy. Ka wairewa i roto i te wai matao, ā, ka taea te hanga i tētahi kirikiri hurihuri i raro i ētahi āhuatanga. He pai ōna āhuatanga whakamātotoru, whakaemulsification, whakatārewatanga, pumau me te pupuri wai. Nā ēnei mahi ka whakamahia whānuitia i roto i te taro, ngā keke, ngā inu, ngā hua miraka, ngā kai tio me ētahi atu mara. Hei tauira, ka taea e ia te whakapai ake i te kakano o te paraoa pokepoke me te whakaroa i te koroheketanga; i roto i ngā kai tio, ka taea e ia te whakapai ake i te ātete tio-rewa.

Ahakoa ōna mahi rerekē, kāore te methylcellulose tonu e mimitihia, e whakapūkaratia rānei i roto i te tinana tangata. I muri i te horomia, ka tukuna te nuinga mā te ara nakunaku i roto i te āhua kāore i pirau, ā, ka āhua iti noa iho tōna pānga tika ki te tinana tangata. Heoi anō, kua ara ake anō hoki te āwangawanga o te tangata mō te whakamahinga roa o tēnei āhuatanga, kei pāngia pea te hauora o te puku.

2. Aromatawai paitini me ngā rangahau haumaru

He maha ngā rangahau paitini kua whakaatu he pai te hototahitanga koiora o te methylcellulose, ā, he iti hoki te paitini. I whakaatuhia e ngā hua o ngā whakamātautau paitini ohorere he nui ake te LD50 (te horopeta whakamate waenga) i te nui i whakamahia i roto i ngā tāpiringa kai tuku iho, e whakaatu ana i te haumaru teitei. I roto i ngā whakamātautau paitini mō te wā roa, kāore i whakaatuhia e ngā kiore, ngā kiore me ētahi atu kararehe he pānga kino nui i raro i te whāngai mō te wā roa i ngā horopeta teitei, tae atu ki ngā mōrearea pēnei i te mate pukupuku, te teratogenicity me te paitini uri.

Hei tāpiritanga, kua whānuitia hoki te rangahau i te pānga o te methylcellulose ki te puku tangata. Nā te mea kāore e nakunaku, e mimitihia rānei, ka taea e te methylcellulose te whakanui ake i te rahinga o te paru, te whakatairanga i te nekeneke o te puku, ā, he pai anō hoki mō te whakaora i te mate puku. I taua wā anō, kāore e whakapūpūtia e ngā tipu puku, ka whakaiti i te tūponotanga o te hau, te mamae puku rānei.

3. Ngā ture me ngā tikanga

He tino ture te whakamahinga o te methylcellulose hei tāpiringa kai puta noa i te ao. E ai ki te aromatawai a te Komiti Tohunga Tahi mō ngā Tāpiringa Kai (JECFA) i raro i te Whakahaere Kai me te Ahuwhenua o te Kotahitanga o ngā Whenua (FAO) me te Whakahaere Hauora o te Ao (WHO), ko te nui o te methylcellulose e whakaaetia ana i ia rā (ADI) kāore i te "tohua", e tohu ana he haumaru te whakamahi i roto i te horopeta kua tūtohutia.

I te Hononga o Amerika, kua whakarārangihia te methylcellulose hei matū e mōhiotia whānuitia ana he haumaru (GRAS) e te US Food and Drug Administration (FDA). I ​​te Kotahitanga o Ūropi, kua whakarōpūtia hei tāpiringa kai E461, ā, kua whakamāramahia tōna whakamahinga mōrahi i roto i ngā momo kai. I Haina, kua whakahaeretia hoki te whakamahinga o te methylcellulose e te "Paerewa Haumaru Kai ā-Motu mō te Paerewa Whakamahinga Tāpiri Kai" (GB 2760), e hiahia ana kia tino whakahaeretia te horopeta e ai ki te momo kai.