Sinadaran 'ya'yan itacen apple da pear masu mahimmanci ne ga masu samar da abubuwan sha, burodi, da kiwo na duniya. Yawancin jigilar kayayyaki na ƙasashen waje suna dogara ne akan kwantena masu tsawon ƙafa 20 a cikin firiji (reefer) don tafiye-tafiyen teku na kwanaki 20-45. Matsalar da aka saba gani ga masu shigo da kaya ita ce cewa abubuwan da aka tattara a sarari, masu launin zinare masu haske sau da yawa suna juya launin ruwan kasa mai duhu ko launin ruwan kasa mai duhu lokacin da suka isa - koda lokacin da aka jigilar su a ƙarƙashin yanayin zafi mai ɗorewa akai-akai. Daidaiton launi, wanda aka auna ta hanyar ƙimar CIELAB L*, a*, b*, muhimmin ma'auni ne na inganci ga masana'antun. Wannan labarin ya bayyana dalilan sinadarai na launin ruwan kasa, abubuwan da ke haifar da haɗarin reefer, da kuma ingantattun hanyoyin magance launi yayin jigilar kaya zuwa ƙasashen waje.
Babban abin da ke haifar da canza launin fata yayin jigilar reefer shine launin ruwan kasa mara enzymatic, domin an riga an kashe polyphenol oxidase (PPO) ta hanyar maganin hana tsufa a zafin jiki mai zafi. Halayen sinadarai guda uku masu mahimmanci suna haifar da duhu:
- Amsar Maillard: Babban abin da ke haifar da hakan. Tuffa da pear masu yawa suna ɗauke da yawan rage sukari (glucose, fructose) da kuma amino acid marasa suna. Ko da a 0-4°C, waɗannan mahaɗan suna canzawa a hankali tsawon makonni don samar da melanoidins masu duhu, suna rage haske (ƙimar L*) da kuma ɗaga ma'aunin launin ruwan kasa na A420. Pear mai yawa yana yin launin ruwan kasa da sauri 30-50% saboda yawan amino nitrogen.
- Polyphenol Oxidation: Bin diddigin ragowar iskar oxygen a cikin kanun durum aseptic yana haifar da jinkirin iskar shaka na polyphenols na halitta (chlorogenic acid, catechin), wanda ke samar da polymers masu launin ruwan kasa na quinone. ions na ƙarfe (ƙarfe, jan ƙarfe) daga marufi ko kayan aiki suna hanzarta wannan amsawar.
- Lalacewar Ascorbic Acid: Bitamin C na halitta yana raguwa a hankali a lokacin da ake ajiye shi a cikin sanyi, yana rage kariyar antioxidant kuma yana haifar da launin ruwan kasa na biyu.
Jigilar kwantena ta hanyar sake amfani da su yana haifar da yanayi na musamman wanda ke hanzarta asarar launi fiye da ajiyar sanyi mai tsayi:
- Canjin Zafi: Kula da tashoshin jiragen ruwa, canjin wutar lantarki, da canjin zafin teku suna haifar da juyawar ±2–3°C. Yawan launin ruwan kasa yana ƙaruwa da kashi 32% a lokacin da sanyin ya yi sanyi ba tare da wani tsari ba, kuma yanayin zafi sama da 7.2°C (45°F) yana haifar da duhu cikin sauri cikin kwanaki 20 kacal.
- Dogon Lokacin Sufuri: Tafiye-tafiye na kwanaki 25-40 suna ƙara launin ruwan kasa wanda ba ya dogara da lokaci ba. Ma'aunin launin ruwan kasa na pear concentrate yana ƙaruwa da sama da raka'a 0.3 bayan kwana 30 a zafin 4°C.
- Bayyanar Haske: Binciken kwastam yana fallasa abubuwan da ke cikin haske ga hasken UV da hasken da ake iya gani, yana lalata launuka da kuma rage ƙimar L*.
- Zubar da Girgiza Mai Alaƙa da Girgiza: Hayaniyar teku tana haifar da ƙananan zubewar iska a cikin hatimin jakar aseptic, wanda ke ba da damar shigar iskar oxygen da kuma duhun da ke kewaye.
Daidaiton launi ya bambanta sosai tsakanin apple da pear concentrates:
| Fihirisa | Share Apple Mai Haɗawa | Ruwan 'ya'yan itacen pear mai yawa |
|---|---|---|
| Launin Tushe | Rawaya mai launin bambaro mai haske | Fararen zinare mai haske |
| Gudun Browning | Matsakaici | 30–50% cikin sauri |
| Sakamakon Komawa Gida na Kwanaki 30 | Ƙaramin launin amber | Canjin launin rawaya-kasa-kasa a bayyane yake |
A matsayinmu na ƙwararren mai fitar da kaya daga ƙasar Sin, muna aiwatar da tsarin sarrafa cikakken tsari don daidaita launi don jigilar kaya daga masu fitar da kaya masu tsawon ƙafa 20:
- Zaɓin Kayan Danye: Muna zaɓar nau'ikan 'ya'yan itatuwa marasa ƙarancin polyphenol, marasa ƙarancin amino acid kuma muna ƙin amfanin gona da ba su nuna ba ko kuma waɗanda suka nuna fiye da kima don iyakance abubuwan da ke haifar da launin ruwan kasa.
- Rage Yawan Tarin Injin Tsaftacewa Mai Ƙanƙanta: Yin amfani da ƙafewa ƙasa da 60°C (maimakon hanyoyin zafi na gargajiya) yana rage halayen Maillard na farko kuma yana kiyaye launin haske na halitta.
- Marufi Mai Cike da Nitrogen: Ana cika ganguna gaba ɗaya don kawar da sararin kai, kuma ana cire iskar oxygen da ya rage da nitrogen mai darajar abinci (O₂ ≤0.5%). Ganguna masu bakin ƙarfe masu darajar abinci suna hana gurɓatar ion na ƙarfe.
- Ka'idojin Kayayyakin da aka Tsare: Mun wajabta a riƙa sanya zafin jigilar kaya na 0-2°C akai-akai (ba ya wuce 5°C ba), a rage buɗe ƙofofin kwantena yayin binciken kwastam, kuma a guji fallasa hasken rana a gefen tashar jiragen ruwa.
- Tsarin Maganin Kariya Daga Cututtukan Dabbobi: Ana ƙara adadin citric acid na halitta da bitamin C da aka samo daga 'ya'yan itace don daidaita pH da toshe iskar shaka, bin ƙa'idodin FDA da EU - babu wani abu mai hana sinadarai na roba don umarnin halitta.
Tambayoyin da ake yawan yi ga Masu Sayayya na Duniya
- Shin duhun da aka yi da ruwa ba shi da haɗari? Rashin launin ruwan kasa mai sauƙi canji ne kawai na gani ba tare da haɗarin tsaro ba; ɗanɗanon yana da ƙarfi tare da ɗanɗanon inabi mai laushi. Ruwan launin ruwan kasa mai duhu mai tsanani yana fitowa ne daga lalacewa a cikin marufi ko yanayin zafi mai yawa, wanda ƙa'idodinmu ke hanawa.
- Shin daskararrun bishiyoyin reef (-18°C) za su iya daina yin launin ruwan kasa? Yayin da daskarewa ke dakatar da yin launin ruwan kasa, yana lalata tsarin colloidal na abubuwan da ke da tsabta, yana haifar da gajimare na dindindin da laka. Muna ba da shawarar jigilar daskararru ne kawai don abubuwan da ke da duhun apple.
- Har yaushe ake adana launi? Tare da marufin nitrogen ɗinmu, sinadarin apple mai tsabta yana tsayawa na tsawon kwanaki 35, kuma sinadarin pear na tsawon kwanaki 28 a cikin ruwan 'ya'yan itace mai zafi 0-2°C.
A ƙarshe, yin launin ruwan kasa a kan ruwan apple da pear a lokacin jigilar reefer yana faruwa ne sakamakon halayen da ba su da enzymatic kuma yana ta'azzara ta hanyar canjin yanayin zafi, dogon tafiya, haske, da iskar oxygen. Maganinmu na haɗe-haɗe - daga zaɓin kayan masarufi zuwa ingantaccen tsarin jigilar reefer - yana rage canza launi yadda ya kamata kuma yana tabbatar da daidaiton launi lokacin isowa. Don samun daidaito, daidaiton launi da ƙimar jigilar reefer mai tsawon ƙafa 20, tuntuɓi ƙungiyar tallace-tallace don cikakkun bayanai da rahotannin dakin gwaje-gwaje.
Sakamakon ajiya a zafin ɗaki (-10~38 °C)
Sakamakon Ajiyar Yanayi
表格
| Watanni Masu Tarawa | Darajar launi (430nm) | Watsa haske (625nm) | Turbidity | HMF(mg/kg) | Lactic acid (mg/kg) |
|---|---|---|---|---|---|
| Wata 0 | 81.2 | 99.2 | 0.162 | 0.84 | 383.41 |
| Disamba | 75.8 | 99.2 | 0.165 | 0.84 | 383.71 |
| 27 ga wata | 65.8 | 99.3 | 0.165 | 0.86 | 384.89 |
Muhimman Abubuwan da aka Gano
- Babban raguwa a darajar launi
Daga 81.2 zuwa 65.8 a cikin watanni 27, ƙimar lalacewa ita ce 18.97, kuma watan 27 ya kusanto ƙimar mahimmanci ta ≥ 65.
- Canje-canje a bayyane na ji
Daga launin rawaya mai launin zinare zuwa launin rawaya mai launin ruwan kasa a wata na 9, sannan kuma zuwa launin ja mai launin ruwan kasa a wata na 27.
- Daidaiton watsa haske/turbidity
Watsa haske 99.2-99.4%, turbidity 0.162-165, yanayin ajiya bai shafe shi ba
- Ƙananan halittu suna da ƙwarewa a duk tsawon aikin.
Duk alamun ƙwayoyin cuta suna da 0 ko ba a gano su ba, kuma amincin yana da kyau.
- HMF ya ɗan tashi kaɗan
Daga 0.84 zuwa 0.86 mg/kg, ƙaramin canji, ƙasa da iyaka ≤ 20
Lokacin Saƙo: Yuli-09-2026
