Video narration
Istemal ke baad aap ki plastic bottle mahol mein taweel arsay tak reh sakti hai. Yeh derpa kachra aik bara masla hai. Magar kuch bacteria khud PHB, yani polyhydroxybutyrate, banate hain. Munasib halaat mein yeh madah biodegradable hota hai, is liye plastic ka mumkin mutabadil hai. Lekin baat sirf mutabadil ki nahin. Bacteria ko oxygen kaise dein, aam bulbule banaye baghair? Is tehqiq mein Cupriavidus necator H16 nami bacteria ko aik chhote membrane bioreactor mein rakha gaya. Yeh aisa nizam hai jahan bacteria liquid culture mein rehte hain. Yahan Hollow-fiber PDMS membranes, yani bareek khokhle reshon jaisi jhiliyan, oxygen ko apni deewar ke paar liquid culture tak pohanchati hain. Oxygen pohanchti hai, magar aam bulbule nahin bante. Yaad rakhein, PHB munasib halaat mein biodegradable mumkin mutabadil hai; yahan oxygen bulbulo ke bajaye membrane paar karke culture tak pohanchti hai.