Cov tshuaj yej ntsuab feem ntau muaj cov khoom xws li ascorbic acid, tannins, polyphenolic compounds, catechin fats thiab carotenoids.Cov khoom xyaw no muaj kev cuam tshuam rau kev puas tsuaj vim yog oxygen, kub, av noo, lub teeb thiab ib puag ncig tsw.Yog li ntawd, thaum ntim tshuaj yej, qhov cuam tshuam ntawm cov yam ntxwv saum toj no yuav tsum tsis muaj zog lossis tiv thaiv, thiab cov kev cai tshwj xeeb yog raws li hauv qab no:
Moisture kuj
Cov ntsiab lus dej hauv tshuaj yej yuav tsum tsis pub tshaj 5%, thiab 3% yog qhov zoo tshaj plaws rau kev khaws cia ntev;txwv tsis pub, cov ascorbic acid nyob rau hauv cov tshuaj yej yuav yooj yim decomposed, thiab cov xim, aroma thiab saj ntawm cov tshuaj yej yuav hloov, tshwj xeeb tshaj yog nyob rau hauv ntau dua kub., tus nqi ntawm deterioration yuav ceev.Yog li ntawd, cov ntaub ntawv ntim khoom uas muaj kev ua tau zoo noo noo tuaj yeem raug xaiv rau ntim cov khoom pov thawj, xws li cov ntaub ntawv sib xyaw ua ke raws li cov ntawv txhuas los yog txhuas ntawv ci evaporated zaj duab xis, uas tuaj yeem ua rau cov ntaub ntawv tsis zoo.Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev kho dej noo-pov thawj ntawm cov tshuaj yej dub ntim.
Oxidation kuj
Cov ntsiab lus oxygen hauv pob yuav tsum tau tswj qis dua 1%.Cov pa oxygen ntau dhau yuav ua rau qee cov khoom hauv tshuaj yej kom oxidatively deteriorate.Piv txwv li, ascorbic acid tau yooj yim oxidized rau hauv deoxyascorbic acid, thiab txuas ntxiv nrog cov amino acids mus rau cov tshuaj tiv thaiv xim, uas ua rau lub saj ntawm tshuaj yej tsis zoo.Txij li cov tshuaj yej roj muaj ntau npaum li cas ntawm unsaturated fatty acids, xws li unsaturated fatty acids yuav cia li oxidized los tsim carbonyl tebchaw xws li aldehydes thiab ketones thiab enol tebchaw, uas kuj yuav ua rau cov aroma ntawm tshuaj yej ploj, lub astringency yuav lighter, thiab lub xim yuav tsaus.
ntxoov ntxoo
Txij li cov tshuaj yej muaj chlorophyll thiab lwm yam tshuaj, thaum ntim tshuaj yej nplooj, lub teeb yuav tsum tau shielded los tiv thaiv photocatalytic cov tshuaj tiv thaiv ntawm chlorophyll thiab lwm yam khoom.Tsis tas li ntawd, cov kab hluav taws xob ultraviolet kuj yog ib qho tseem ceeb hauv kev ua kom cov tshuaj yej nplooj deterioration.Txhawm rau daws cov teeb meem zoo li no, shading ntim tshuab siv tau.
Roj barrier
Lub aroma ntawm tshuaj yej nplooj yog yooj yim ploj, thiab cov ntaub ntawv uas muaj huab cua zoo yuav tsum tau siv rau aroma-preserving ntim.Tsis tas li ntawd, tshuaj yej nplooj yog yooj yim heev rau nqus cov ntxhiab tsw sab nraud, kom cov aroma ntawm tshuaj yej nplooj yog kab mob.Yog li ntawd, cov ntxhiab tsw uas tsim los ntawm cov khoom ntim thiab ntim tshuab yuav tsum tau tswj nruj me ntsis.
Kub kub
Qhov nce hauv qhov kub thiab txias yuav ua kom cov tshuaj tiv thaiv oxidation ntawm cov tshuaj yej nplooj, thiab tib lub sij hawm yuav ua rau lub ntsej muag gloss ntawm cov tshuaj yej nplooj yuav ploj mus.Yog li ntawd, tshuaj yej nplooj yog tsim rau cia nyob rau hauv qis kub.
Composite zaj duab xis hnab ntim
Tam sim no, ntau thiab ntau cov tshuaj yej ntim hauv khw tau ntim rau hauvcomposite zaj duab xis hnab.Muaj ntau ntau hom kev sib xyaw ua yeeb yaj kiab rau ntim tshuaj yej, xws li dej-pov thawj cellophane / polyethylene / ntawv / aluminium ntawv ci / polyethylene, biaxially oriented polypropylene / aluminium ntawv ci / polyethylene, polyethylene / polyvinylidene chloride / polyethylene, thiab lwm yam. cov khoom, noo noo tsis kam, fragrance tuav, thiab anti-peculiar tsw.Qhov kev ua tau zoo ntawm cov yeeb yaj kiab sib xyaw nrog cov ntawv ci txhuas yog qhov zoo dua, xws li shading zoo heev thiab lwm yam.Muaj ntau hom ntawv ntim cov hnab ntim zaj duab xis, suav nrog peb sab sealing,sawv ntsug pouches,sawv ntsug pouches nrog lub qhov rais ntshiabthiab folding.Tsis tas li ntawd, lub hnab ntim zaj duab xis muaj cov ntawv luam tawm zoo, thiab nws yuav muaj qhov tshwj xeeb zoo thaum nws siv rau kev muag khoom ntim tsim.
Post lub sij hawm: Jun-18-2022