Zomwe zimayambitsa mamasukidwe akayendedwe mu dryer dryer… Momwe mungaletsere

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Zomwe zimayambitsa mamasukidwe akayendedwe mu dryer dryer… Momwe mungaletsere

 

 Chidule:

Zakudya zouma zouma zimagawidwa m'magulu awiri: osamata ndi viscous. Zosakaniza zosamata ndizosavuta kupopera zouma, zowumitsira zosavuta komanso ufa womaliza umayenda momasuka. Zitsanzo za zinthu zopanda ndodo zimaphatikizapo ufa wa dzira, ufa wa mkaka, mankhwala ndi zina maltodextrin, chingamu ndi mapuloteni. Pankhani ya chakudya chomata, pali vuto la kuyanika pansi pamikhalidwe yabwinobwino yowumitsa utsi. Chakudya chomata nthawi zambiri chimamamatira pakhoma la chowumitsira, kapena chimakhala chakudya chomata chopanda ntchito m'zipinda zowumitsira ndi zoyendera, zomwe zimakhala ndi zovuta zogwirira ntchito komanso zokolola. Zakudya za shuga ndi asidi ndi zitsanzo zenizeni.

 

Viscos ndi chodabwitsa chomwe chimakumana ndi kuyanika kwa zakudya zokhala ndi glycolic acid. Kukhuthala kwa ufa ndi mtundu wa ntchito yolumikizirana. Iwo akhoza kufotokoza tinthu-tinthu mamasukidwe akayendedwe (mgwirizano) ndi tinthu-khoma mamasukidwe akayendedwe (kumatira). Muyeso wa mphamvu yomangiriza ndi tinthu ta ufa ndi chifukwa cha mawonekedwe ake amkati otchedwa cohesion, kupanga misa mu bedi la ufa. Choncho, mphamvu yomwe ikufunika kudutsa mu ufa wa agglomerate iyenera kukhala yaikulu kuposa mgwirizano. Kumatira ndi mawonekedwe a mawonekedwe, ndipo tinthu tating'onoting'ono timatsatizana ndi machitidwe a zida zowumitsira utsi. Kugwirizana ndi kumamatira ndizofunikira kwambiri popanga kuyanika ndi kuyanika. Pamwamba zikuchokera ufa particles makamaka udindo mamasukidwe akayendedwe. The kaphatikizidwe ndi kumamatira chizolowezi ufa tinthu pamwamba zipangizo ndi osiyana. Chifukwa kuyanika kumafuna kuchuluka kwa solute kuti kusamutsidwe ku tinthu tating'onoting'ono, timachulukira. Makhalidwe awiri a viscosity (kulumikizana ndi kumamatira) amatha kukhala limodzi muzowumitsa zowumitsa zakudya zokhala ndi shuga wambiri. The mamasukidwe akayendedwe pakati particles ndi mapangidwe anakonza madzi milatho, kusuntha madzi milatho, makina unyolo pakati mamolekyu, ndi electrostatic yokoka ndi milatho olimba. Chifukwa chachikulu chophatikizira tinthu tating'ono ta khoma m'chipinda chowumitsira ndikutayika kwa zinthu mu shuga wowumitsa-kupopera ndi zakudya zokhala ndi asidi. Pamene ufa wasungidwa kwa nthawi yaitali, udzauma pakhoma.

 

Zimatsogolera ku viscous

Skupemphera wolemera chakudya kuyanika ufa yobwezeretsanso kutsitsi kuyanika luso. Shuga wolemera kwambiri wa maselo ndizovuta kwambiri (shuga, fructose) ndi ma organic acid (citric acid, malic acid, tartaric acid). Tinthu tating'onoting'ono tokhala ngati mayamwidwe amadzi ambiri, thermoplasticity ndi kutentha kwapang'onopang'ono kwa vitrification transition (Tg) zimathandizira ku zovuta za viscosity. Kutentha kowumitsa kupopera ndikwapamwamba kuposa Tg20°C. Zambiri mwazigawozi zimapanga tinthu ting'onoting'ono tofewa pamwamba pa viscous, zomwe zimapangitsa kukhuthala kwa ufa, ndipo pamapeto pake amapanga phala m'malo mwa ufa. Kuyenda kwamphamvu kwa molekyuluyi ndi chifukwa cha kutentha kwake kochepa kwa vitrification transition (Tg), komwe kumabweretsa mavuto a viscosity mu zowumitsa zopopera zomwe nthawi zambiri zimakonda kutentha. Waukulu makhalidwe a galasi kutembenuka kutentha ndi amorphous gawo kutembenuka kutentha. Chochitika cha kusintha kwa galasi chinachitika mu shuga wolimba wolimba, wa amorphous, womwe unasintha kukhala gawo lamadzimadzi la rabara yofewa. Mphamvu zam'mwamba ndi magalasi olimba zimakhala ndi mphamvu zochepa ndipo sizimamatira kumalo otsika olimba. Chifukwa cha mawonekedwe a galasi ku bwato la rabara (kapena madzi), pamwamba pa zinthuzo zikhoza kukwezedwa, ndipo kugwirizana pakati pa molekyulu ndi pamwamba olimba kungayambe. Poyanika chakudya, mankhwalawa amakhala amadzimadzi kapena zomatira, ndipo chakudya chamadzimadzi / zomatira chomwe chimachotsa pulasitiki (madzi) chimakhala galasi. Ngati zakudya zopangira zakudya sizisintha kuchokera ku kutentha kwambiri kowuma kuposa kutentha kwagalasi, mankhwalawa amakhalabe ndi mphamvu zambiri zamakayendedwe. Ngati chakudya chamtunduwu chikakhudzidwa ndi malo olimba amphamvu kwambiri, chimamamatira kapena kumamatira.

 

Kuwongolera mamasukidwe akayendedwe 

Pali zipangizo zambiri sayansi ndi ndondomeko ofotokoza njira kuchepetsa mamasukidwe akayendedwe. Njira zoyambira za sayansi ya zinthu zimaphatikizirapo zida zokhala ndi ma molekyulu olemera amadzimadzi owumitsa zowonjezera kuti muwonjezere kutentha kunja kwa kutembenuka kwa vitrification, ndi njira zozikidwa pamakina ndi makoma a chipinda chamakina.

 


Nthawi yotumiza: Feb-22-2024