PMID- 37517491
OWN - NLM
STAT- MEDLINE
DCOM- 20231010
LR  - 20231011
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 236
IP  - Pt 2
DP  - 2023 Nov 1
TI  - Sublethal effects of bio-plastic microparticles and their components on the 
      behaviour of Daphnia magna.
PG  - 116775
LID - S0013-9351(23)01579-7 [pii]
LID - 10.1016/j.envres.2023.116775 [doi]
AB  - Bioplastics arise as an alternative to plastic production delinked from fossil 
      resources. However, as their demand is increasing, there is a need to investigate 
      their environmental fingerprint. Here we study the toxicity of microplastics 
      (MPLs) of two widely used materials, the polylactic acid (PLA) and the 
      polyhydroxybutyrate (PHB) on the environmental aquatic model species Daphnia 
      magna. The study was focused on sublethal behavioural and feeding endpoints 
      linked to antipredator scape responses and food intake. The study aimed to test 
      that MPLs from single-use household comercial items and among them bioplastics 
      should be more toxic than those obtained from standard plastic polymers and 
      fossil plastic materials due to the greater amount of plastic additives, and that 
      MPLs should be more toxic than plastic extracts due to the contribution of both 
      particle and plastic additive toxicity. MPLs were obtained by cryogenic grinding 
      and sea-sand erosion to obtain irregular particles. MPL included standard 
      polymers and nine comercial items of PLA and PHB and one fossil-based material of 
      high-density polyethylene (HDPE). The additive content in commercial items was 
      characterised by liquid chromatography coupled with high-resolution mass 
      spectrometry. D. magna juveniles were exposed for 24 h to particles and their 
      plastic extracts. Results indicated that the toxicity of bioplastic particles was 
      five times higher than the effects produced by exposure to the content of the 
      additives alone, that bioplastic particles were more toxic than fossil ones and 
      that particles obtained from commercial items were more toxic than those obtained 
      from PLA, PHB or HDPE polymer standards. Predicted toxicity from the measured 
      plastic additives in the studied commercially available household items, however, 
      was poorly related with the observed behavioural and feeding effects. Further 
      research on unknown chemical components together with physical factors is need it 
      to fully understand the mechanisms of toxicity of bioplastic materials.
CI  - Copyright (c) 2023 The Authors. Published by Elsevier Inc. All rights reserved.
FAU - Savva, Katerina
AU  - Savva K
AD  - Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi 
      Girona 18, 08034, Barcelona, Spain.
FAU - Farre, Marinella
AU  - Farre M
AD  - Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi 
      Girona 18, 08034, Barcelona, Spain.
FAU - Barata, Carlos
AU  - Barata C
AD  - Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi 
      Girona 18, 08034, Barcelona, Spain. Electronic address: cbmqam@cid.csic.es.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20230728
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - 0 (Microplastics)
RN  - 0 (Plastics)
RN  - 9002-88-4 (Polyethylene)
RN  - 0 (polyhydroxybutyrate)
RN  - 0 (Polyesters)
RN  - 0 (Biopolymers)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Animals
MH  - *Microplastics
MH  - Plastics/toxicity/analysis
MH  - Daphnia
MH  - Polyethylene/pharmacology
MH  - Polyesters/toxicity
MH  - Biopolymers/pharmacology
MH  - *Water Pollutants, Chemical/analysis
OTO - NOTNLM
OT  - Behaviour
OT  - Bioplastics
OT  - Daphnia magna
OT  - Feeding
OT  - Plastic microparticles
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/07/31 00:41
MHDA- 2023/10/10 06:41
CRDT- 2023/07/30 19:14
PHST- 2023/05/05 00:00 [received]
PHST- 2023/07/12 00:00 [revised]
PHST- 2023/07/27 00:00 [accepted]
PHST- 2023/10/10 06:41 [medline]
PHST- 2023/07/31 00:41 [pubmed]
PHST- 2023/07/30 19:14 [entrez]
AID - S0013-9351(23)01579-7 [pii]
AID - 10.1016/j.envres.2023.116775 [doi]
PST - ppublish
SO  - Environ Res. 2023 Nov 1;236(Pt 2):116775. doi: 10.1016/j.envres.2023.116775. Epub 
      2023 Jul 28.