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Fig. 2 | Bioresources and Bioprocessing

Fig. 2

From: Conventional use and sustainable valorization of spent egg-laying hens as functional foods and biomaterials: A review

Fig. 2

Protein extraction from spent hens. Protein extraction protocol 1 was summarized from Wang and Wu (2012) and Fan et al. (2021) with slight modifications; protein extraction protocol 2 was summarized from Zubair (2017) with slight modifications. Supernatants can be freeze-dried to obtain proteins, or be further dialyzed before collecting the retainates for freeze-drying

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