Vipambi na mphangwe viphya vikukhala vyamoyo para vyaseŵeka, vikulutilira kupuma na kuchita milimo yankhongono pa umoyo. Kumbali yinyake, kupuma kwa thupi kukurya vyakurya vya vipambi na mphangwe na maji ghake, ndipo ivi vikukhwaska umo vikuwonekera na umo vikuŵira; kweni para munthu wakhwaskika na tumatumbo tuchokotuchoko uto tukwambiska matenda, vipambi na mphangwe vingavunda. Ntheura, kanandi vipambi na mphangwe viphya vikufota, vikuŵa viwemi yayi, ndipo vikuvunda para vikusungika, kunyamulika, na kuguliskika, ntheura vikuchepa mtengo wa vyakurya vyake.
Kuŵika vinthu mu mathumba ghawemi kukuwovwira waka yayi kuti vipambi na mphangwe vileke kunangika, vikupangiska kuti vileke kunangika ndiposo kuti vikhale nyengo yitali, kweni vikukopaso ŵanthu awo ŵakugula vinthu ivi ndiposo vikovwira kuti ŵanthu ŵavigwiliskirenge ntchito. Pasono ŵanthu ŵakugwiliskira ntchito chomene filimu ya pulasitiki pakupakira vipambi na mphangwe viphya. Lili na vitumbiko nga nkhuwonekera, kuvikilira kutentha, kupuma, kusindikizga, na mtengo wakucepa, ndipo lili na cigomezgo cikuru ca kugwiriskira ncito pa msika. Ivyo vikulondezgapo vizamulongosora nthowa zakusungiramo vipambi na mphangwe ziphya.
Mathumba gha polyethylene ghakuwoneka makora chomene
Mu vyaka vyasonosono apa, ŵanthu ŵakugwiliskira ntchito chomene chinthu ichi ku vyaru vinyake kuti ŵaŵikemo vipambi viphya. Kulingana na umo vipambi vikuŵira ndiposo umo vikuzizipizgira mphepo na carbon dioxide, mu thumba la filimu ŵangasazgako ma micropores ghanyake (40μm) kuti ŵasinthe mphepo, kuchepeskako chinyezi na vinthu ivyo vikusinthasintha mukati mwa thumba, ndiposo kusunga mphepo iyo yili mukati mwa thumba pa mlingo ukuru (<1% O2). This prevents excessive oxygen concentration from causing anaerobic respiration, thereby avoiding the accumulation of large amounts of volatile substances such as ethanol and acetaldehyde, which would affect the flavor of the fruit. The oxygen concentration inside the film bag can generally be maintained at around 10-15%, and it is highly tolerant of carbon dioxide concentration, making it especially suitable for fruits and vegetables with high humidity, particularly tropical fruits. In other countries, these packaging bags are used to store "frozen" cherries, which can be preserved for 80 days in ordinary cold storage while maintaining the flavor and quality of the fruit.
Kupakira kwakusinthika kwa oxygen wapachanya-
Ni nthowa yiphya yakupakira vinthu iyo yawoneka mu vyaka vyasonosono apa. Mpweya wa mpweya uwo uli mu mathumba ghakupangika na chlorine ghakupangika na chlorine kanandi ukusungika pa 70{9}}100%. Kupakira uku kuli na vitumbiko ivi: (1) kukukanizga enzyme kugwira ntchito ndiposo kukupangiska kuti vipambi na mphangwe vileke kuŵa vya bulawuni; (2) vikupangiska kuti munthu waleke kupuma kwambura mphepo ndiposo vikupangiska kuti vipambi na mphangwe viŵe viwemi; (3) vikukanizga makora kukura kwa tuvilombo tuchokotuchoko twa aerobic na anaerobic ndiposo vikupangiska kuti vileke kuvunda, ntheura vyakopa ŵanthu ŵanandi. Icho nchakwenelera chomene kusunga vipambi na mphangwe ziphya na vipambi na mphangwe ivyo vyadumulika viphya ivyo vikutemwa kupuma kwambura mphepo na kuthukira para pali mphepo yinandi ya carbon dioxide ndiposo mphepo yichoko ya oxygen. Pa nyengo yeneyiyo, chiŵelengero cha mpweya uwo uli mukati mwa thumba chikumanyikwa kuyana na mikhaliro ya vipambi na mphangwe zakupambanapambana.
Vinthu viphya vyakuŵikamo mathumba ivyo vikunangika
Chifukwa chakuti ŵanthu ŵakukhwaskika kuti kugwiliskira ntchito mankhwala ghakukoma matenda kwa nyengo yitali kuzamunanga umoyo wa ŵanthu na kunanga chilengiwa, pamoza na kukhumba chomene vyakuŵikamo vithuzithuzi vya pulasitiki na suzgo lakukura la "kufipiskika kwa vithuzithuzi vituŵa," ivyo ŵanthu ŵakukhumba pa vyakuŵikamo vyakuŵikamo vinthu vyasintha na kuŵa vyambura kupwetekeska chilengiwa. kuŵa paubwezi. Vinthu viphya vyakuŵikamo vyakurya ivyo vikuvunda ni nkhani yiphya yakutentha mu vyakupakira vyakurya pa caru cose. Ikugwiriskira ncito vinthu vyakupambanapambana vya polymer ivyo vikunangika ndipo yikusazgapo munkhwala wakukoma mabakiteriya gha vyamoyo, kuphatikizapo milimo yinandi nga nkhusunga, kunanga na kuvikilira cilengiwa. Chinthu ichi chakuŵikamo mathumba nchambura kusuzga kugwiliskira ntchito, chomenechomene pakuŵikamo vipambi na mphangwe zakudumulika viphya-na vyakurya vyakuphika, ndipo chili na chigomezgo chikuru cha kugwiliskira ntchito pakupanga mathumba gha vyakurya viphya munthazi.
