Kwanan nan, nazarin daga Jami'ar McGill a Kanada sun nuna cewa jakunkuna shayi sun saki dubun biliyoyin filastik a babban yanayin zafi. An kiyasta cewa kowane kofin shayi ya barke daga kowane jakar shayi ya ƙunshi Microplastics 11.6 biliyan 3.1. An buga binciken a cikin Jaridar Amurka ta Kimiyya ta Amurka da fasaha a ranar 25 ga Satumba.
Sun zabi jakunkuna huɗu da aka zaba da su. Musamman, ana iya amfani da dabbobi a cikin yawan zafin jiki kewayon 55 - 60 ℃ na dogon lokaci, kuma yana iya jure yawan zafin jiki na 65 ℃ da ƙarancin zafin jiki na - 70 ℃ na ɗan gajeren lokaci, kuma yana da kadan tasiri a kan kayan aikin injin a babba da ƙananan yanayin zafi. Jefa da shayi, wanke jakar da tsarkakakken ruwa, sannan kuma canza tsarin shayi mai, kuma jiƙa jakar shayi tare da ruwan zafi na 55 ℃ zafi mai zafi na mintina 5. A bayyane yake cewa ruwan da muke brew shayi shine ruwan zãfi, kuma zazzabi ya fi girma sama da amfani da dabbobi.
Gwajin McGill ya nuna cewa za a saki babban barbashi na filastik na farko. Kofin jakar shayi na iya saki kimanin miliyoyin biliyan 11.6 da miliyan 3.1 biliyan nanomita na barbashi na filastik! Haka kuma, ko wadannan barbashin filastik filastik suna da guba ga kwayoyin. Don fahimtar guba mai mahimmanci, masu binciken sunyi amfani da fleas na ruwa, invertebrate, wanda shine tsarin ƙirar da aka yi amfani da shi don kimanta gubobi a cikin muhalli a cikin muhalli. A mafi girma maida hankali ne na jakar shayi, da kasa da aiki ruwan Freda yin iyo. Tabbas, m karfe + filastik ya fi muni da abubuwan da aka tsarkake filastik. A ƙarshe, ruwan ya mutu bai mutu ba, amma ya ƙazantu. Binciken ya ƙarasa da cewa ko jakar jakar shayi na jakar shayi ta shafi lafiyar ɗan adam yana buƙatar lafiyar ɗan adam yana buƙatar ƙarin bincike.