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Chikunguru ndiyo nguva yekupisa kwezhizha, uye munguva yezhizha inopisa uye ine hunyoro, chikafu chinogona kuva nzvimbo inobereka mabhakitiriya chero nguva. Kunyanya michero nemiriwo, kana michero nemiriwo zvitsva zvakatengwa zvisina kuchengetwa mufiriji, zvinogona kuchengetwa kwezuva rimwe chete. Uye zhizha rega rega, kune zviitiko zvakawanda zvemanyoka zvinokonzerwa ne "kudya zvisina kunaka", vakuru nevana, vanowanzo fungidzirwa sekudya "kutonhora". Kutaura zvazviri, chikafu kana zvinwiwa zvinopisa zvishoma zvinoita kuti vamwe shamwari vanzwe kugadzikana kwemudumbu nekukurumidza, asi kazhinji hazvikonzere kuti vanhu vamhanye kuchimbuzi kakawanda pazuva. Saka panguva ino, chinhu chekutanga chekufunga nezvacho hutachiona hwemudumbu hunokonzerwa nehutsanana hwechikafu. Chikafu chinodyiwa chiri kuora uye kuora here? Saka tingadya sei michero nemiriwo mitsva muzhizha rinopisa?

Panguva ino, chinhu chekutanga chatinofunga nezvacho kuchengetera firiji. Zvisinei, kune marudzi mazhinji ezvekudya nezvinwiwa zvakachengetwa mufiriji, pakati pazvo pane zvekudya zvakawanda "zvinopinza mabhakitiriya" mufiriji, zvakaita semazai anogona kutakura salmonella, nenyama mbishi, michero nemiriwo zvinogona kutakura Escherichia coli inokonzera hutachiona, Staphylococcus aureus inokonzera hutachiona uye tupukanana. Uye firiji inewo nguva yekuchengetedza. Kazhinji, chikafu chinotora mazuva maviri kusvika matatu chinofanira kudyiwa, zvikasadaro chinoora mufiriji nekufamba kwenguva. Panguva imwe chete, firiji inewo nzvimbo yekuchengetera, iyo inoshandiswa chete kushandiswa pamba. Kana iri supermarket hombe, tingachengeta sei chikafu chitsva kubva kune vatengesi vatinowana?

Nekukura kwehupfumi hwenyika, kupinza nekuburitsa michero nemiriwo kunze kwenyika kwave chinhu chakajairika. Tichitarisana nemamiriro ezvinhu aya, tinofanira kudzidza mhando itsva yemishonga inochengetedza - 1-MCP michero nemiriwo. Kana chigadzirwa ichi chagadzirwa, chakagamuchira mhinduro yakanaka. Nekuti ichi chinhu chinochengetedza chisina chepfu, chakachengeteka zvikuru, uye chinoshanda zvakanyanya. Tevere, ngatitaurei nezvezvinhu zviri mu1-MCP michero nemiriwo.

Chii chinonzi 1-Methylcyclopropene?

1-Methylcyclopropene, yakapfupikiswa se 1-MCP muchiRungu,CAS 3100-04-7Fomura yemakemikari ndeye C4H6. Kana tembiricha nekumanikidzwa kwakajairika, chitarisiko chayo hachina ruvara, hachina chepfu uye hachina kunaka, ine huwandu hwe0.838g/cm3. Imusanganiswa weCyclopropene unoshanda zvikuru. 1-Methyl Cyclopropene inonyanya kushandiswa senzira yekukura kwezvirimwa uye inoshandiswa zvakanyanya mukuchengetedza zvirimwa. Ine zvakanakira zvekushandiswa zvishoma, kuchengetedza kwakanaka uye kuchengetedzeka kwakanyanya.

Hunhu hwe1-MCP

1-MCP inogona kudzivirira kuburitswa kwe ethylene nemiti pachayo, uye zvakare inovhara kubatana kwe ethylene kune ma receptors ane chekuita nemasero emiti, nokudaro ichidzivisa kuibva kwe ethylene. Nokudaro, kushandisa 1-Methylcyclopene kunogona kuwedzera nguva yekuibva nekukwegura kwemiti, nokudaro ichiwedzera nguva yekuchengetwa kwayo, kuderedza kuora nekurasa zvinhu panguva yekutakura nekuchengetera, uye kuwedzera nguva yekuchengetwa kwezvinhu.

Mashandisirwo e1-MCP

1-MCPinogona kushandiswa kuchengetedza michero, miriwo, nemaruva kudzivirira kusvava kwezvirimwa. Semuenzaniso, kana ikashandiswa pamichero nemiriwo yakaita semaapuro, mapeya, mapurumu, kiwifruit, nematomatisi, inogona kunonoka kuibva kwayo, kuderedza kupwa kwemvura, uye kuchengetedza kuoma kwayo, kuravira, uye kuumbwa kwezvinovaka muviri; Panyaya yekuchengetedza maruva, inogona kuchengetedza ruvara nekunhuhwirira kwemaruva. ​​Pamusoro pezvo, 1-Methylcyclopene inogonawo kuvandudza kudzivirira zvirwere zvezvirimwa.1-Methylcyclopeneinhanho itsva mukuchengetedza michero nemiriwo mushure mekuchengetedzwa kwemhepo yakachinjwa.

Mushure medenda iri, hupfumi hwakadzoka, uye kukura kwekutengeserana kwepasi rose kwaikura zvishoma nezvishoma. Gore rega rega, nyika yega yega yaigadzira michero nemiriwo mitsva yakawanda yemuno. Nekuda kwekukura kusina kukwana kwezvekurima, inenge 85% yemichero nemiriwo yaishandisa zvekushandisa, zvichikonzera kurasikirwa kukuru kwekuora, izvo zvakapawo nzvimbo yakakura yemusika yekukurudzira nekushandisa.1-methyl CyclopropeneSaka, zvinogona kuonekwa kuti 1-MCP ine mikana yakakura yekukura, kwete chete kune michero nemiriwo yakasiyana-siyana yekufema, asiwo inogona kuwedzera nguva yekuchengetwa uye kugara kwenguva refu mushure mekukohwa, kunyanya kune michero nemiriwo inonzwa ethylene, uye inogona kuchengetedza mhando yemichero nemiriwo kwenguva yakareba.