Nekuda kwekuchengetedza kudya kwakanaka uye kuchengetedza & kutakura kuri nyore, shrimp yakaomeswa nechando chigadzirwa chakakurumbira chinotengeswa kunze kwenyika kubva kuSoutheast-Asia uye chinotengeswa zvakanyanya kuChina, Japan, South Korea, Europe neNorth America nekuda kwekudya kwemugungwa ipapo, muto wakaomeswa nechando uye chikafu chisati chabikwa. Zvakadaro, seyakakwira-protein yakakwira-unyoro mumvura yakasvibira, shrimp ine yakaderera kugadzirwa kushivirira. Mazhinji ma processor anosangana nezvakajairwa zvinosanganisira vhoriyamu shrinkage, kuomarara nyama mameseji, kutadza kudzoreredza mvura uye kusanganisa kwepasi. Kuti uwane shrimp yakaomeswa-yakaomeswa neyakaomeswa nekuita rehydration, kudzora kwakasimba kunofanirwa kumhanyisa kuburikidza nepreatment, pre-chando, sublimation uye desorption-kuomesa.
Pretreatment inoisa hwaro hwemhando. Shrimp yakasvibirira inoda kusheedzera, kucheneswa uye kunyatsosuka. Blanching ye enzyme inactivation yakakosha. Tembiricha yemvura uye nguva yekunyura inofanira kunyatsodzorwa. Kusakwana blanching kunosiya maprotein-enzymes achishanda uye anotungamira mukuipa kwekunaka panguva yekuchengetedza; over-blanching inokonzeresa kuwanda kweprotein denaturation uye yakaoma nyama yakaomeswa. Mushure me blanching, kutonhora nekukurumidza uye kuzara kwemvura yepasi pemvura kunodiwa. Mvura inorema yemahara-mvura ichawedzera zvakanyanya kuomeswa uye kukonzera kusangana kwechando pakati pe shrimp. Paridza shrimp mune imwechete layer pamatireyi uye dzivirira inorema stacking uye kudzvanya.
Pre-freezing: kunyatsodzika pre-kutonhora kunosungirwa kune yakakwirira-protein shrimp. Kusakwana pre-chando kutonhora kana kubata-nguva kunosiya chikamu chemvura chemukati chisina kuomeswa. Kunyungudika kwechidimbu kunoitika pasi pe sublimation vacuum uye kunokonzeresa shrinkage yakaoma uye kuomarara kuumbwa. Pre-freezing hold-time ichasiyana zvichienderana nehukuru hwe shrimp; shrimp yakakura inoda nguva yakareba-yekuvimbisa kutonhora kuzere pa shrimp core.
Munguva yekuomeswa kwe sublimation, nyatso kudzora sherufu yekudziya mwero uye dzivirira nekukurumidza kukwira kwekushisa. Kupisa kwakapinza kunokonzeresa kukurumidza kweprotein denaturation uye kuipa kwakashata. Chengetedza vacuum yakatsiga pasina gadziriso yakakura-yakakura kudzivirira kukanganisa kwezvinhu. Ice ichadzika uye kutiza zvishoma nezvishoma pane kuputika kwemhepo.
Muchikamu chekuomeswa-kuomeswa, mvura yakasungwa inoderedzwa kusvika kune yakasara-munyoro yemhando. Kunyanya kusara kwehunyoro kunoita kuti hunyoro hunyure uye huparare panguva yekufambisa kwegungwa kureba uye kuchengetwa kwetembiricha yepamusoro uye kunopfupisa hupenyu hwesherufu. Nekudaro, kuomeswa-kunyanya kurebesa-kuomesa kunowedzera kuwedzera kupera kwenyama. Kunoperera hunyoro hunangwa huchaiswa zvinoenderana nehupenyu hunotarisirwa pasherufu.
Kunze kwezvo, shrimp dzemabviro akasiyana uye saizi haigone kugovera imwe yakagadziriswa-maitiro curve. Mafekitori achavaka parameter matura ezvinowanzo shandiswa shrimp zvakatemwa. Mushure mekuburitsa, pedzisa vacuum nitrogen-yakazadzwa yekuisa chisimbiso nekukasira kuparadzanisa mweya nehunyoro uye kuvimbisa kunaka kwechigadzirwa panguva yekuyambuka-muganho murefu-gungwa-yekufambisa.
