Title Evaluacija prikladnosti različitih klasa recikliranih papira za izradu zdravstveno ispravne prehrambene ambalaže Author Sonja Jamnicki Mentor Branka Lozo (mentor)Committee member Darko Babić (član povjerenstva)Committee member Branka Lozo (član povjerenstva)Committee member Diana Gregor Svetec (član povjerenstva) Committee member Željka Barbarić (član povjerenstva) Committee member Tadeja Muck (član povjerenstva) Granter University of Zagreb Defense date and country 2011-4-27, Croatia Scientific / art field, TECHNICAL SCIENCES Universal decimal classificationUDC ) 655 - Graphic industries. Printing. Publishing. Book trade Abstract Svrha istraživanja bila je evaluacija zdravstvene ispravnosti razli�itih vrsta recikliranih papira
i kartona s ciljem identifikacije kontaminanata prisutnih u pojedinim klasama papira i kartona
koji mogu migrirati u hranu i time potencijalno ugroziti zdravlje potroša�a. Analize
zdravstvene ispravnosti provedene su na odabranim klasama recikliranih papira i kartona koji
su bili proizvedeni, bilo industrijski, bilo u laboratorijskim uvjetima, iz sirovina koje se prema
vrsti, kvaliteti i porijeklu vlakanaca mogu svrstati u 4 najvažnija razreda starog papira i
kartona sukladno postoje�oj Europskoj listi standardnih klasa starog papira EN 643:2001.
Ve�inu odabranih uzoraka �inili su papiri i kartoni proizvedeni recikliranjem sekundarne
vlaknate sirovine postupcima koji nisu uklju�ivali primjenu kemijske deinking flotacije. Iz tog
su razloga navedeni uzorci biti podvrgnuti dodatnom "odbojavanju" metodom kemijske
deinking flotacije, kako bi se utvrdilo eventualno smanjenje kemijskih kontaminanata u
sastavu sekundarnih vlakanaca nakon njihove obrade deinking flotacijom. Cilj istraživanja
bila je provjera u�inkovitosti razli�itih postupaka recikliranja na smanjenje kemijskih
kontaminanata iz definiranih klasa starog papira.
Analize zdravstvene ispravnosti uklju�ivale su odre�ivanje koncentracije teških metala (Cd,
Pb, Hg), pentaklorofenola (PCP) i formaldehida, aromatskih amina, diisopropilnaftalena
(DIPN), ukupnih ftalata te polikloriranih bifenila (PCB) iz vodenog ili organskog ekstrakta
papira ili kartona. Provedene su analize migracije koloranata te fluorescentnih opti�kih bjelila
iz ispitivanih uzoraka papira u modelne otopine hrane. Provedena su i mikrobiološka
ispitivanja s ciljem detekcije prijelaza antimikrobnih tvari iz papira ili kartona. Istraživanje je
dokazalo da su u sme�im klasama papira i kartona naj�eš�e prisutni kontaminanti upravo
diizopropilnaftaleni i ftalati. Deinking flotacija provedena na sme�oj klasi papira i kartona
imala je pozitivan u�inak na smanjenje kemijskih kontaminanata iz vlaknate suspenzije.
U ovoj se doktorskoj disertaciji po prvi put sustavno istražuju svi najvažniji �imbenici koji
imaju utjecaj na zdravstvenu ispravnost papirnih i kartonskih materijala proizvedenih iz
recikliranih vlakanaca. U radu je detaljno prikazana aktualna europska legislativa koja se
odnosi na papirne i kartonske materijale namijenjene kontaktu s hranom. Disertacijom se
tako�er ukazalo na neusuglašenost koja je prisutna unutar postoje�e europske legislative.
Abstract (english) Safety evaluation of various recovered paper grades was conducted in order to identify the
contaminants that are present in certain classes of recycled paper and board which have an
ability to migrate into food and thus potentially endanger the consumers’ health. Food contact
analyses were conducted on selected classes of recycled paper and board that were produced
either industrially or in laboratory conditions. The paper and board samples were produced
from furnishes that can be classified, according to the type, quality and the origin of the
fibers, into 4 main recovered paper and board grades in accordance with existing European
List of Standard Grades of Recovered Paper and Board EN 643:2001. Most of the selected
paper and board samples were produced by recycling processes that didn't include the
application of the chemical deinking flotation. For this reason, these samples were subjected
to additional deinking processes in order to evaluate the possible decrease in the amount of
chemical contaminants in the composition of the pulp after chemical deinking flotation had
been conducted. The aim of the research was to evaluate the effectiveness of the different
recycling methods in the reduction of the contaminants from the defined paper and board
grades.
Food contact analyses comprised determination of heavy metals (Cd, Pb, Hg),
pentachlorophenol (PCP), formaldehyde, aromatic amines, diisopropylnaphthalenes (DIPN),
phthalates and polychlorinated biphenyls (PCB) from aqueous or organic solvent extracts of
paper and board. The fastness of the fluorescent whitening agents and the colorants was
determined as well. In addition, microbiological tests were performed in order to determine
the possible transfer of antimicrobial constituents. The research has proven that the most
common contaminants that are present in the brown paper grades are diisopropylnaphthalenes
and phthalates. The conducted deinking flotation on selected brown paper grades had a
positive impact on the reduction of chemical contaminants from the fiber suspension.
This dissertation is one of the first studies in which the most significant factors that influence
the safety of recycled paper and board food contact materials have been systematically
discussed. Moreover, the current European legislation on paper and board materials and
articles intended to come into contact with foods is presented with an emphasis on the
nonuniformity that is still present within the existing European legislation.
Keywords
Prehrambena ambalaža
zdravstvena ispravnost
reciklirani papir i karton
klase starog papira i kartona
kontaminanti
migracija
redukcija kontaminanata
Keywords (english)
Food packaging
health safety
recycled paper and board
recovered paper and board grades
contaminants
migration
reduction of contaminants
Language croatian URN:NBN urn:nbn:hr:216:965824 Study programme Title: Graphic engineering and graphic product design Type of resource Text File origin Born digital Access conditions Open access Terms of use Created on 2024-04-24 22:17:50
