Ένα βακτήριο μπορεί να δώσει λύση στη μάστιγα του πλαστικού

Ιάπωνες επιστήμονες ανακάλυψαν έναν μικροοργανισμό που τρέφεται με πλαστικό. Πρόκειται για μια ανακάλυψη που θα μπορούσε να αξιοποιηθεί στην ανακύκλωση στο πλαίσιο ανάπτυξης νέων μεθόδων διάσπασης του πλαστικού, που πνίγει τον σύγχρονο κόσμο και τον πλανήτη.

Οι ερευνητές ανακάλυψαν ότι το βακτήριο Ideonella sakaiensis έχει την ικανότητα , χρησιμοποιώντας ένα ζεύγος ενζύμων (βιολογικοί καταλύτες που χρησιμοποιούν τα ζώα για να διασπάσουν τις τροφές) να διασπά το τερεφθαλικό πολυαιθυλένιο, γνωστό ως PET, το οποίο χρησιμοποιείται για την κατασκευή συσκευασιών, ρούχων και μπουκαλιών.

Η διαδικασία της διάσπασης από τον μικροοργανισμό κρίνεται ως αργή, ωστόσο με περαιτέρω μελέτη θα μπορούσε να επιταχυνθεί η διαδικασία. Σύμφωνα με όσα ανακοινώθηκαν το βακτήριο χρειάστηκε έξι εβδομάδες για να διασπάσει εντελώς ένα μικρό κομμάτι πλαστικού PET χαμηλής ποιότητας. Η διάσπαση του υλικού ανώτερης ποιότητας που χρησιμοποιείται στις συσκευασίες θα διαρκούσε ακόμα περισσότερο.

Το PET χρησιμοποιείται κυρίως στην εμφιάλωση νερού και αναψυκτικών καθώς είναι ιδιαίτερα ανθεκτικό στο νερό και έχει μεγάλη διάρκεια ζωής. Αυτές του οι ιδιότητες ωστόσο, που για τη βιομηχανία είναι ισχυρά πλεονεκτήματα, για το περιβάλλον αποτελούν μια μάστιγα.

Σημειώνεται πως ετησίως, όπως γράφει το RT, παράγονται 310 εκατομμύρια τόνοι πλαστικού, ωστόσο μόνο το 14% των πλαστικών απορριμμάτων ανακυκλώνεται.

Σύμφωνα με την μελέτη, που δημοσιεύθηκε στο επιστημονικό περιοδικό Science, το βακτήριο «είναι σε θέση να χρησιμοποιεί το PET ως κύρια πηγή ενέργειας και άνθρακα». έτσι το Ideonella sakaiensis διασπά το PET σε τερεφθαλικό οξύ και αιθυλενογλυκόλη, δύο ενώσεις φιλικές προς το περιβάλλον.

«Μείναμε έκπληκτοι όταν διαπιστώσαμε πως ο μικροοργανισμός διασπούσε το PET, γιατί μέχρι στιγμής κυρίαρχη άποψη ήταν πως το PET είναι ένα μη βιοδιασπώμενο πλαστικό», δήλωσε ο Kohei Oda, ένας εκ των ερευνητών.

Πηγή:

http://tvxs.gr/news/sci-tech/ena-baktirio-mporei-na-dosei-lysi-sti-mastiga-toy-plastikoy

Comments

Day 1828: After five years, Julian Assange still in prison and under slow-motion execution by the Anglo-American imperialist criminals

failed evolution On 11 April 2019, the Ecuadorian government of traitor Lenin Moreno, invited the Metropolitan Police into the Ecuadorian embassy in London, and they arrested Julian Assange . Since then, Assange is kept in Belmarsh high security prison in London, without actual charges. The real reason world's number one political prisoner is still kept in this high security prison, is because he exposed horrendous war crimes carried out by the US imperialists and their allies. The ruthless Western imperialist regime wants to punish the No1 real journalist in the world and make him an example for any Whistleblower or real journalist who will attempt to expose its big crimes in the future. And the Anglo-American axis has now become officially a fascist coalition , framed by the rest of its Western pets. UK's Home Secretary Priti Patel, one of the most ruthless ever, decided to extradite Julian Assange to US. No surprise of course. The only question we had in mind is

The wounded US imperialist beast becomes more dangerous than ever as desperately seeks to start a WWIII

globinfo freexchange It seems that the declining Western superpower is losing ground and tries hardly to avoid the inevitable. The US imperialist beast, despite all the destruction that causes, is failing to fulfill its utter objectives. Which in short, are the dissolution of Russia and China, looting their vast resources, as well as the full expansion of the destructive neoliberal model throughout these areas and other countries allied with the Sino-Russian bloc. Most importantly, the wounded beast is loosing much of its strength due to the rapid de-dollarization that has started approximately ten years ago, as dollar had become the front line of the US imperialist sweeping force since the early 70s. As if nothing has changed, the beast insists on using the same tools to prevail in the global geopolitical field, ignoring the unprecedented changes and complexities under current circumstances. In a move (as it seems) of desperation, the United States House of Representative

Atlanta Police Violently Arrest Emory Students & Faculty to Clear Gaza Solidarity Encampment

Democracy Now! As a wave of student protests against Israel’s war on Gaza continues to spread from coast to coast, schools and law enforcement have responded with increasing brutality to campus encampments. One of the most violent police crackdowns took place at Emory University in Atlanta on Thursday, when local and state police swept onto the campus just hours after students had set up tents on the quad in protest against Israel’s war on Gaza as well as the planned police training center known as Cop City. Police used tear gas and stun guns to break up the encampment as they wrestled people to the ground, and are accused of using rubber bullets. Among those arrested were a few faculty members. Democracy Now! spoke with two of the arrested professors: Noëlle McAfee, chair of the philosophy department, and Emil’ Keme, professor of English and Indigenous studies. Also with Palestinian American organizer and medical student Umaymah Mohammad, who describes how Emory has repeat

Yanis Varoufakis Banned from Germany as Berlin Police Raid & Shut Down Palestinian Conference

Democracy Now! As Germany intensifies its crackdown on pro-Palestinian voices, Democracy Now! spoke with Greek economist and politician Yanis Varoufakis, one of the planned speakers at a conference in Berlin last weekend that was forcibly shut down by police. The Palestine Congress was scheduled to be held for three days, but police stormed the venue as the first panelist spoke. Germany's Interior Ministry had also banned some conference speakers from even entering the country, including Varoufakis, the Palestinian British surgeon Ghassan Abu-Sittah and the Palestinian researcher Salman Abu Sitta. " This is not about protecting Jewish lives and Jews from antisemitism. It's all about protecting the right of Israel to commit any war crime of its choice, " says Varoufakis. Varoufakis speaks also about freeing Julian Assange and his new book Technofeudalism . Related: Germany again on a dark path towards fascism

"Student Intifada": Stanford, University of Michigan, Indiana University, & more

The Real News Network Seven months into Israel’s genocidal war on Gaza, a student-led grassroots movement is spreading across the US and beyond, hearkening back to the student protests of the ‘60s that played a pivotal role in ending the US war in Vietnam. In what is being called the “student intifada,” with over 100 encampments going up at different college and university campuses, students, faculty, grad students, and other campus community members are exercising civil disobedience, occupying space on campuses, defying brutal repression from administrators and police, combatting skewed and wildly lopsided narratives in corporate media, and pressuring their universities to “disclose and divest” their investments in companies and financial institutions connected to Israel. TRNN speaks with encampment organizers/participants from the University of Michigan, the Indiana University, and Stanford University, and gets updates from encampments from New York to California.

Pro-Palestinian Campus Encampments Spread Nationwide Amid Mass Arrests at Columbia, NYU & Yale

Democracy Now! Palestinian solidarity protests and encampments are appearing on college campuses from Massachusetts to California to protest Israel's attacks on Gaza and to call for divestment from Israeli apartheid. This week, police have raided encampments and arrested students at Yale and New York University. Palestinian American scholar and New York University professor Helga Tawil-Souri describes forming a faculty buffer to protect students, negotiating with police, and the ensuing crackdown that led to over 100 arrests Monday night. Uptown in New York City, the encampment at Columbia University is entering its seventh day despite mass arrests of protesters last week. "In my opinion, the NYPD were called in under false pretenses by the president of the university," says Joseph Slaughter, professor at Columbia University. "The university is being run as a sort of ad-hocracy at this point, the senior administration making up policies and procedures and pro

Indiana University Brings In SNIPERS & Then LIES About It

Katie Halper Katie Halper talks to Aidan Khamis and Bryce Greene, who was arrested at Indiana University where snipers have been brought in. Bryce Greene is a student, writer, organizer and media critic based in Indianapolis. He is a contributor to Fairness and Accuracy In Reporting. He was arrested and banned from Indiana University's campus for participating in the Gaza solidarity encampment at Indiana University. Aidan Khamis is an organizer for Palestine Solidarity Committee IU and IU divestment coalition.

Leaked NYT Gaza Memo Tells Journalists to Avoid Words “Genocide,” “Ethnic Cleansing,” and “Occupied Territory”

Amid the internal battle over the New York Times’s coverage of Israel’s war, top editors handed down a set of directives. by Jeremy Scahill, Ryan Grim Part 1 The New York Times instructed journalists covering Israel’s war on the Gaza Strip to restrict the use of the terms “genocide” and “ethnic cleansing” and to “avoid” using the phrase “occupied territory” when describing Palestinian land, according to a copy of an internal memo obtained by The Intercept . The memo also instructs reporters not to use the word Palestine “ except in very rare cases ” and to steer clear of the term “ refugee camps ” to describe areas of Gaza historically settled by displaced Palestinians expelled from other parts of Palestine during previous Israeli–Arab wars. The areas are recognized by the United Nations as refugee camps and house hundreds of thousands of registered refugees. The memo — written by Times standards editor Susan Wessling, international editor Philip Pan, and their deputies — “ offer

Πως θα καταλάβετε ότι το καθεστώς Μητσοτάκη είναι ότι χειρότερο έχει κυβερνήσει τη χώρα στη μεταπολίτευση

Από τον μέγα ηγέτη Μωυσή ως τον αντίπαλο λαό, μια θητεία Μητσοτάκη δρόμος globinfo freexchange Αν ακόμα δεν έχετε πάρει χαμπάρι με τι άθλια διακυβέρνηση έχουμε να κάνουμε. Αν δεν σας έπεισε η καταστροφική διαχείριση της πανδημίας, οι υποκλοπές, τα Τέμπη, το ρεκόρ καμένων δασών, η ακρίβεια, τα υπερκέρδη των καρτέλ, η διάλυση του συστήματος υγείας και τόσα άλλα. Τότε μάλλον ανήκετε στην κατηγορία των ανθρώπων που είναι εξαιρετικά επιρρεπείς στην επικοινωνιακή καταιγίδα του καθεστώτος Μητσοτάκη, με την οποία επιχειρεί να κρύψει τον όλεθρο που σπέρνει στο διάβα του. Όμως αν είναι όντως έτσι, ίσως να σας πείσει η δραματική αλλαγή του επικοινωνιακού αφηγήματος του μιντιακού προπαγανδιστικού μηχανισμού, που απεικονίζει το μέγεθος της αποτυχίας της διακυβέρνησης Μητσοτάκη. Θυμηθείτε ότι με την έναρξη της πρώτης θητείας Μητσοτάκη, ο μηχανισμός προπαγάνδας παρουσίαζε τον ίδιο τον Μητσοτάκη ως τον μέγα ηγέτη που βγάζει την Ελλάδα από το περιθώριο, χρησιμοποιώντας πολλές φορές και υπερβολ

the unbalanced evolution of homo sapiens

Search This Blog