Tannins (tannins) bụ ogige sitere na osisi na-emepụta. Ha bụ nke polyphenols ma bụrụ ogige na-emeghachi omume nke ukwuu. Tannins bụ mmiri na-agbaze ma nwee ịdị arọ molekụla n'ihe dị ka 500 ruo 3000 Da. Ngwaahịa nwere nnukwu ọdịnaya nke ogige ndị a nwere uto siri ike, na-adịghị mma ma nwee ike ịbụ ihe na-egbu egbu.
N'ihe banyere osisi, tannins nwere ọrụ nchebe, na-egbochi herbivores. Tinyere ihe ndị ọzọ, tannins dị na ogbugbo osisi oak, willow, spruce, chestnut, larch, ukpa epupụta, sage, mmanya, tii, mkpụrụ, na ọtụtụ mkpụrụ osisi (dị ka blueberries, strawberries, raspberries, cranberries, mkpụrụ vaịn, pọmigranet, apụl), na St. wort, cinquefoil, tonip rape, cistus infusion na legume mkpụrụ, buckwheat, ọchịchịrị chocolate na koko.
Tannins - mmebi
Anyị na-ekewa tannin n'ime ụzọ abụọ:
- hydrolysing - n'etiti molekul bụ monosaccharide, nke hydroxyl otu nke na-esterified na gallic acid residues ma ọ bụ ya mmepụta; na-adị mfe hydrolysed na-adịghị ike acids na bases ma ọ bụ enzymes;
- ndị na-abụghị hydrolysing (condensed) - ha enweghị saccharide na molekul, a na-ahụ ha na mkpụrụ osisi na mkpụrụ osisi na-adịghị amị mkpụrụ, nke n'okpuru nduzi nke ripening na-agbajikwa n'ime ogige ndị nwere obere mkpụrụ ndụ.
Tannins - Njirimara
A na-eji tannins mara ọtụtụ ihe bara uru maka ahụ mmadụ, gụnyere:
- belata iwe,
- belata itching na ọkụ,
- nwere mgbochi mkpali na antibacterial Njirimara,
- na-akwado ọrụ nke usoro ahụ ji alụso ọrịa ọgụ,
- gbochie allergies.
A na-ewere ya n'ọnụ, ha na-enwe mmetụta astringent na akpụkpọ anụ mucous, na-egbochi ike ha, na-egbochi, dịka ọmụmaatụ, microbleeding site na arịa ọbara capillary (nke bụ isi na eriri afọ).
Dị ka ndị ọkà mmụta sayensị si kwuo, tannins nwere ike ichebe ụdị ọ bụla akpụ akpụma na-ebelatakwa ọnụ ọgụgụ nke mkpụrụ ndụ kansa na-ekewa. Ha nwere ike inye aka gbanwee microflora nke ọnụ na eriri afọ, na-ewepụ ihe ndị na-akpata ọrịa. Njirimara antioxidant siri ike nke tannins na-eme ka radicals efu na-emebi akụkụ sel ndị bụ isi. Ha na-egbochi peroxidation lipid na ịba ụba nke nje HIV. Ha nwekwara mmetụta mgbochi carcinogenic. A na-agbajikwa tannins dị mfe hydrolysing na tract digestive. A na-ejikwa tannins egbochi mmetụta nke nsị alkaloids.
A na-ejikwa tannin na-agwọ akpụkpọ anụ. Ọrụ antioxidant nke tannins dịkwa mkpa na ịgbatị ndụ nchekwa nri. Otu ihe atụ bụ mmanya na-acha ọbara ọbara, nke, ekele maka tannins, nwere ike ịmalite ruo ọtụtụ afọ ma ọ bụghị oxidized. N'ihi ịdị mfe nke ijikọta tannins na ion ígwè, a na-eji ha nweta agba agba.
Iji ihe ọkụkụ eme ihe nke ukwuu na tannins na-egbochi nnabata nke, n'etiti ndị ọzọ, vitamin, macro- na microelements na eriri afọ. Tannin na-abụghị hydrolysing decompose na eriri afọ tract n'ime ogige ndị na-egbu egbu, na-akpata nsị, ya mere a ga-ezere iri mkpụrụ osisi na-adịghị amị mkpụrụ.