HYBRID EVENT: You can participate in person at Paris, France or Virtually from your home or work.
Abel E Navarro, Speaker at Catalysis Conferences
Borough of Manhattan Community College, United States
Title : A green approach for the recovery of proteins from meat industries


The adsorption of bovine serum albumin (BSA) and human hemoglobin (Hb) on naturally-occurring adsorbents was studied to evaluate the potential recovery of proteins from meat industry residues. Spent peppermint tea (PM), powdered purple corn cob (PC), natural clay (NC) and chemically-modified clay (MC) were investigated to elucidate the effects of pH, adsorbent dose, initial protein concentration, presence of salts and heavy metals. Equilibrium data was fitted according to isotherm models, reporting a maximum adsorption capacity at pH 8 of 318 and 344 mg BSA/g of PM and NC, respectively. Moreover, Hb displayed maximum adsorption capacity at pH 5 of 125 and 143 mg/g of PM and PC, respectively. Hofmeister salt effect was only observed for PM/Hb system. Salts tend to decrease protein adsorption, and the presence of Cu(II) ions had negligible impacts on the adsorption onto NC and PC. Desorption experiments confirmed that more than 85% of both proteins can be recovered with diluted acids and bases. SEM, EDX and TGA analyses demonstrated that the adsorbents have favorable morphological and mechanical properties. The long-term goal of this study aims to recover soluble proteins from industrial wastewaters to produce animal food or any protein-based product.

Audience Take Away:

  • Audience will learn about the alternative use of biowastes, especially lignocellulosic materials.
  • This presentation will incentivize collaboration with meat industries to generate a secondary profit, such as animal food industries.
  • The use of biowastes can be applied in different Green Chemistry scenarios, including the classroom and industries. These biowastes have low cost and are easy to manipulate.
  • Additional collaborations are welcome, mostly in the scaling of the process by using continuous-flow experiment and testing this technique with real industrial wastewaters from meat factories.


Dr. Abel Navarro studied Chemistry at the Cayetano Heredia Peruvian University in Lima, Peru and then moved to the USA to earn his MS in Organic Chemistry in 2007. Then, he continued with his Ph.D. in Biomolecular Chemistry, with emphasis in protein chemistry, graduating in 2011. Next, Dr. Navarro was appointed as an Assistant Professor at the Borough of Manhattan Community College, part of the CUNY network in New York City. Now as an Associate Professor, he continue conducting research with highly motivated and talented students, coauthoring around 40 peer-reviewed articles since his appointment. The authors would like to acknowledge BMCC and CUNY for the travel funds for Faculty members and PSC-CUNY for funding this research.