Mitundu ya Blueberries, ikapsa bwino, imatenga mtundu wobiriwira wa buluu-indigo, itasintha kuchokera kubiri zobiriwira kupita ku buluu. Blueberries ndi apadera pa zakudya m'dzikoli chifukwa pali zakudya zochepa zokha zapuluu kunja uko.
Nanga nchiyani chomwe chimapanga blueberries buluu?
Khungu la buluu lidzaza ndi mankhwala otchedwa biologically produced anthocyanins. Mnofu wa mabulosiwo uli ndi njovu, zoyera.
Ndi khungu lokha limene lili ndi dothi lachilengedwe, koma pamene pericarp ikuvulaza anthocyanins akulowa mu maselo owonongeka ndikuwapaka.
Liwu lakuti anthocyanin limachokera ku mawu achigriki ἀ νθός (anthos) , kutanthauza maluwa; ndi κυανός (kyanos) , kutanthauza buluu. Anthocyanins ndi mitundu yosiyanasiyana yomwe imakhala yofiira, yofiira, ya indigo, komanso ya violet, malinga ndi msinkhu wa pigment wokha. PH mlingo umayendetsa maseŵera mu anthocyanins, m'munsi pH mlingo wofiira ndi nkhumba zimapeza, koma zikawonjezeka zimachokera ku zofiira, zofiirira, za buluu, zobiriwira komanso zachikasu.
Mukasakaniza kapena kuphika, mankhwala amachititsa kuti pakhale kuchuluka kwa pH, choncho chifukwa chake zipatsozo zimapanga mtundu wa chigoba kapena mtundu wachiwawa kusiyana ndi kukhalabe mu mtundu wawo wobiriwira, wabuluu.
Zimaganizidwa kuti mtundu uwu wofiira ndi mtundu wa violet ndi kusintha komwe zamasamba zimakhala ngati njira yokopa nyama.
Kafukufuku amasonyeza kuti tizilombo timene timakonda tizilombo timeneti ndipo timayendera zomera zomwe zimawawonetsa ngati njira yolimbikitsa kulimbana ndi ziweto kudzera mwa nyama. Zotsatira za zipatso monga blueberries, cranberries, ndi mabulosi akuda - onse olemera mu anthocyanins - asayansi ena amakhulupirira kuti mitundu iyi imakopa nyama zomwe zidzadya chipatso chomwe chidzaperekera mbeu kumalo atsopano pambuyo poti chimbudzi.
Anthocyanins kwenikweni alibe kukoma, koma amangopereka kukoma kwina kokhala ndi astringent kapena kowawa ku chakudya.
Palinso kafukufuku omwe amasonyeza ntchito yawo pakuchotseratu ziwalo zomasuka za thupi monga antioxidants. Komabe, mankhwala ena ophera antioxidant amapezeka mowirikiza kwambiri mu zakudya zambiri zokopa anthocyanins m'malo mopatsa thanzi.
Zakudya zambiri zili ndi anthocyanins:
- Tomato
- Blueberries
- Mabulosi akuda
- Raspberries
- Rhubarb
- Currants
- Yamakiti
- Açaí
- Kabichi wofiira
- Biringanya
- Ma malalanje a magazi
Anthocyanins amachitanso kuti kusintha kwa mtundu wa masamba kumagwa panthawi ya kugwa. Pamene nyengo imakhala yozizira, masamba amayamba kutulutsa mitsempha yambiri ya anthocyanini ikapanda masamba kumayamba kuswa shuga zachilengedwe. Kutembenuka kwa shuga kumachitika chifukwa cha kuchepa kwa phosphate. Kuperewera kwa phosphate kumachitika pamene mtengo ukuyamba kuyamwa phosphate kuchokera masamba kupita mu zimayambira ndi nthambi monga njira yotetezera yokha ku nyengo yozizira ikudza.