Mangoro mai yawan sukari sanannen busasshen 'ya'yan itace ne da aka fitar daga Kudu maso Gabas-Asiya. Duk da haka, ɓangaren litattafan almara na mango ya ƙunshi ɗimbin polyphenol-oxidase da rage-sugar kuma yana da saurin kamuwa da launin ruwan kasa yayin sarrafawa. Akwai manyan hanyoyin yin launin ruwan kasa guda biyu: browning enzymatic yana faruwa lokacin da fashewar ɓangaren litattafan almara ya haɗu da iskar oxygen da polyphenol-oxidase yana haifar da saurin duhu. Maillard non-enzymatic browning yana faruwa a ƙarƙashin yanayin dumama inda rage-sugars ke amsawa da amino acid da duhun ɓangaren litattafan almara. Yawancin masana'antu kawai suna daidaita sigogin daskare-bushe amma suna yin watsi da kayan aiki da matakan riga-kafi kuma har yanzu suna fama da manyan kaya masu lahani. Tsayayyen fitarwa na mango mai daskare-bushewar zinare yana buƙatar daidaitawar cikakken tsarin sarrafa sarkar da ke rufe danye-samfurin grading, riga-kafi mai launi-kariya, tsarin bushewa da daskare, fakitin caji da adana kayan da aka gama.
Na farko, mai shigowa danye-material grading. Ciwon mangoro yana tasiri sosai akan yanayin launin ruwan kasa. Mangoro sama da cikakke yana da ɓangaren litattafan almara mai laushi tare da mafi girman ayyukan polyphenol-oxidase da ci gaba da iskar shaka na ciki. Mangoro mai ɓoyayyiyar rauni da matsi-rauni yana kama da shi a waje yayin da ƙwayoyin ciki sun riga sun karye kuma an fitar da enzymes. Ko da mafi kyawun tsari na ƙasa-ƙasa ba zai iya cikakken guje wa launin ruwan kasa don irin waɗannan 'ya'yan itatuwa ba. 'Ya'yan itãcen marmari masu shigowa za a ba da su sosai. An jera mangwaro da ya fi girma da ya lalace. Za a ba da fifiko ga mangwaro mara kyau daidai gwargwado don samar da busasshiyar 'ya'yan itace.
Na biyu, pretreatment launi-kariya, mafi mahimmanci mataki don toshe enzymatic browning. Bayan bawo da slicing, manyan wuraren ɓangaren litattafan almara suna fallasa zuwa iska kuma polyphenol-oxidase nan da nan ya fara amsawa. Kada a adana yankakken-mangoro na dogon lokaci; aiwatar da maganin kariyar launi da sauri. Madaidaicin ɗan gajeren lokaci blanching yana hana polyphenol-oxidase kuma yana danne launin ruwan enzymatic. Blanching zafin jiki da tsawon lokaci yana buƙatar daidaitawa daidai da nau'in mango da kauri yanki. Saurin sanyaya da sauri bayan blanching yana kawo ƙarshen tasirin zafi. Cire ruwan saman da kyau kafin a yi lodin tire. Rashin cika enzyme-rashin kunnawa kawai yana danne ayyukan enzyme na ɗan lokaci a ƙarƙashin daskare-bushewar yanayin ƙarancin zafi. Enzymes sun sake samun aiki lokacin da zafin jiki ya tashi a lokacin sublimation kuma launin ruwan kasa har yanzu yana faruwa.
Na uku, daskare-bushewa-tsawon lokaci a kan Maillard browning. Halin Maillard yana haɓaka da sauri tare da hawan zafin jiki. Kar a saita yanayin zafi fiye da kima a lokacin ƙaddamarwa don guje wa ɗumama kayan gida. Ci gaba da kwanciyar hankali da kuma rage matakin oxygen na ciki don rage saurin iskar oxygen. Ana buƙatar cikakken daskarewa don cikakken ƙarfafa ɓangaren litattafan almara. Daskarewar da bai cika ba yana kawo narkewar gida cikin haɓakawa. Wuraren narkewa suna samun zafi mai yawa kuma cikin sauƙi suna haifar da amsa Maillard da duhun ɓangaren litattafan almara. Hakanan za'a hana amplitude mai zafi a lokacin bushewar bushewa; An haramta hawan zafi mai sauri.
Na hudu, fitarwa da tattarawa. Rage lokacin buɗewar iska-bita-bayan daskare-bushe. Daskare-busasshen mango yana da ƙayyadaddun yanki na musamman kuma yana da rauni sosai ga canza launin oxidative lokacin da ake tuntuɓar oxygen. Cika marufi mai cike da nitrogen-cike-marufi da wuri-wuri bayan fitarwa. Ɗauki jakunkuna masu shinge masu shinge don toshe shigar iskar oxygen da danshi.
Na biyar, adana kayan da aka gama da jigilar ruwa. Ajiye kayan da aka tattara a cikin sanyi da duhu sito. Guji zafi mai tsayi na dogon lokaci a cikin kwantena yayin jigilar teku zuwa fitarwa, saboda zafi yana haɓaka jinkirin launin ruwan kasa wanda ke haifar da ragowar oxygen a cikin jakunkuna da aka rufe.
A ƙarshe: Ba za a iya magance launin ruwan mango ba kawai ta hanyar daidaita sigogin daskare-bushe. Raw-material grading, pretreatment enzyme-rashin kunnawa & launi-kariya, cikakken tsari daskare-bushewar zafin jiki, marufi mai sauri-marufi da adanar zafin jiki mai sanyi suna da alaƙa da haɗin kai masu mahimmanci. Cikakkun sarkar sarrafa sarkar kawai yana ba da damar samar da tsayayye na samar da busasshiyar mangwaro mai daskare-daraja tare da kyan gani na zinari.
