“…5.1.7 Birds and animal body parts as a carbon source. Birds and animal body parts such as goose/pigeon/chicken/hen feathers, 134,205,206,207 pig skin, 208,209 pork, 210 pig skin collagen, 211 pork rib bones, 212 pork liver, 213 chicken drumstick, 214 animal bones, 215 inner wall of chicken stomach (Galli Gigerii Endothelium Corneum, GGEC), 216 chicken cartilage, 217 and chicken bones 218 are consumed for the preparation of heteroatom-containing CDs using various synthetic methods (Table 1). Noticeably, the effective self-doping of Ca element can be seen from animal bones-derived CDs; however, QYs are not as high as that in other animal body part-synthesized CDs (Table 1).…”