“…The dry weight (DW) basis of yield of chitin and chitosan extracted from various lepidopteran insects such as Bombyx mori , Ephestia kuehniella , Dendrolimus punctatus , Argynnis pandora , and Clanis bilineata were found to be 2.59–56%, 3.1–88.40%, 9.5–10.5%, 8–22% and 31.37–96.2% respectively ( Kaya, Bitim, Mujtaba, & Koyuncu, 2015 ; Luo et al, 2019 ; Mehranian et al, 2017 ; Paulino et al, 2006 ; S.; Wu, 2011 ; Xia et al, 2013 ). Earlier studies have shown that the yields of chitin and chitosan from various marine sources including crab, Scylla tranquebarica (34.27% and 19.13%), Portunus segnis (19.6%), Portunus pelagicus (20%), shrimp, Penaeus semisulcatus (19.13%) Penaeus monodon (30% and 35%), Parapenaeus longirostris (24%) shell, 27.80% in the krill ( Euphausia superba ), 24.6% in the lobster ( Nephrops norvegicus ), 17.8% in the squilla and 31% in the squid ( Illex argentinus ) pen ( Al Sagheer et al, 2009 ; Benhabiles et al, 2013 ; Cortizo, Berghoff, & Alessandrini, 2008 ; Hamdi et al, 2017 ; Sayari et al, 2016 ; Srinivasan et al, 2018 ; Thirunavukkarasu & Shanmugam, 2009 ; Wang et al, 2013 ) After the deproteinization, demineralization and decoloration it was found that the chitin and chitosan content of coleopteran insects like Tenebrio molitor ( Luo et al, 2019 ), Omophlus sp ( Kaya et al, 2016 ), Melolontha melolontha ( Kaya, Baublys, et al, 2014 ; Kaya, Bulut, et al, 2016 ), Hydrophilus piceus ( Kaya et al, 2014 ), Leptinotarsa decemlineata ( Kaya et al, 2014 ), Catharsius molossus ( Ma et al, 2015 ), Calosoma rugose (N. H. Marei et al, 2016 ), Holotrichia parallela ( Liu et al, 2012 ), Lucanus cervus , Polyphylla fullo ( Kabalak, Aracagök, & Torun, 2020 ), Zophobas morio ( Shin et al, 2019 ) , Allomyrina dichotoma and Dung beetle ( Mingtang, 2004 ) was 17.32 and 14.48%, 13–16.60%, 19–20 and 74%, 7–20 and 67–72%, 17 and 24%, 5%, 15%, 10.9%, 11.3%, 3.90–8.40 and 78.33–83.33%, 12.70–14.20 and 75–83.37% and 28.7% of the dry weight respectively. The chitin and chitosan content of Odonata including Sympetrum fonscolombii and Anax imperator ranges between 20.3 and 67% DW ( Kaya et al, 2014 ; Kaya et al, 2016 ).…”