Nchekwa nke methylcellulose na nri

1. Njirimara na ọrụ nke methylcellulose

Nhazi nke methylcellulose dabere na usoro molekulβ-1,4-glucose unit, nke a na-emepụta site na iji otu methoxy dochie ụfọdụ otu hydroxyl. Ọ na-agbaze na mmiri oyi ma nwee ike ịmepụta jel a na-agbanwe agbanwe n'ọnọdụ ụfọdụ. Ọ nwere ezigbo ihe na-eme ka ọ sie ike, na-eme ka ọ dị nro, na-eme ka ọ dị nro, na-eme ka mmiri ghara ịdị. Ọrụ ndị a na-eme ka ọ bụrụ ihe a na-ejikarị eme achịcha, achịcha, ihe ọṅụṅụ, ngwaahịa mmiri ara ehi, nri oyi kpọnwụrụ akpọnwụ na ubi ndị ọzọ. Dịka ọmụmaatụ, ọ nwere ike ime ka udidi nke mgwakota agwa ka mma ma na-egbu oge ịka nká; na nri oyi kpọnwụrụ akpọnwụ, ọ nwere ike ime ka iguzogide oyi kpọnwụrụ akpọnwụ ka mma.

N'agbanyeghị ọrụ dị iche iche ọ na-arụ, methylcellulose n'onwe ya anaghị abanye ma ọ bụ na-agbanwe agbanwe n'ime ahụ mmadụ. Mgbe e risịrị ya, a na-esi na usoro nri pụta n'ụdị na-enweghị nhazi, nke na-eme ka mmetụta ya kpọmkwem n'ahụ mmadụ yie ihe pere mpe. Agbanyeghị, àgwà a akpaliwokwa ndị mmadụ nchegbu na oriri ya ogologo oge nwere ike imetụta ahụike eriri afọ.

2. Ọmụmụ ihe gbasara nchekwa na nyocha ihe ndị na-egbu egbu

Ọtụtụ nnyocha toxicological egosila na methylcellulose nwere ezigbo biocompatibility na obere nsí. Nsonaazụ nke nnwale nsí dị oke njọ gosiri na LD50 ya (ọgwụgwọ na-egbu egbu) dị elu karịa nke ejiri na ihe mgbakwunye nri nkịtị, na-egosi nchekwa dị elu. N'ule nsí ogologo oge, oke, òké na anụmanụ ndị ọzọ egosighi nnukwu mmeghachi omume ọjọọ n'oge nri ogologo oge na oke doses, gụnyere ihe egwu dị ka kansa, teratogenicity na nsí ọmụmụ.

Tinyere nke ahụ, a mụọla mmetụta methylcellulose nwere n'ime eriri afọ mmadụ nke ọma. Ebe ọ bụ na ọ naghị agbaze ma ọ bụ na-amịkọrọ ya, methylcellulose nwere ike ime ka olu nri dịkwuo elu, kwalite peristalsis nke eriri afọ, ma nwee uru ụfọdụ n'ibelata afọ ntachi. N'otu oge ahụ, ọ dịghị agbaze site na osisi eriri afọ, na-ebelata ohere nke afọ ọsịsa ma ọ bụ ihe mgbu afọ.

3. Iwu na ụkpụrụ

A na-achịkwa ojiji methylcellulose dị ka ihe mgbakwunye nri n'ụwa niile nke ọma. Dịka nyocha nke Kọmitii Ọkachamara Joint Expert on Food Additives (JECFA) n'okpuru Òtù Nri na Ọrụ Ugbo nke Mba Ndị Dị n'Otu (FAO) na Òtù Ahụike Ụwa (WHO) si kwuo, a naghị "akọwapụta oke oriri methylcellulose kwa ụbọchị" a na-anabata, nke na-egosi na ọ dị mma iji ya n'ime usoro akwadoro.

Na mba United States, a na-ahụ methylcellulose dị ka ihe dị nchebe (GRAS) site n'aka US Food and Drug Administration (FDA). Na mba European Union, a na-akpọ ya ihe mgbakwunye nri E461, a na-akọwakwa ojiji kachasị ya na nri dị iche iche nke ọma. Na mba China, a na-ejikwa "National Food Safety Standard Food Additive Use Standard" (GB 2760) achịkwa ojiji nke methylcellulose, nke chọrọ njikwa siri ike nke dose dịka ụdị nri si dị.