Search

This study investigated the effect of extracts from unfertilized eggs and fertilized eggs with different culture periods as FBS substitutes for cell culture. A mixture of 5 % FBS and 20 % egg white extract or 10 % FBS and 10 % egg white extract was found to be the optimal condition for increasing cell proliferation. In particular, egg white extract obtained from unfertilized eggs was more effective in terms of increased cell viability and price competitiveness and showed similar effects to commercial FBS. In addition, when using this extract, successful proliferation of satellite cells was confirmed, as well as expression of Pax7, a protein present in muscle satellite cells. Additionally, OVF and OVA in the extract are believed to have an indirect effect on FBS replacements for chick muscle satellite cells towards cultured meat development. Egg white extract can replace up to 50–75 % of FBS. Further developments of the extracts could result in complete FBS substitution.

Fetal bovine serum (FBS) substitution remains one of the challenges to the realization of cultured meat production in the marketplace. In this study, three methods were developed to extract a substitute for FBS using egg white extract (EWE): using 25 mM CaCl2/2.5 % ammonium sulfate/citric acid (A); ethyl alcohol (B); and 5 % ammonium sulfate/citric acid (C). B EWE can effectively replace up to 50 % of FBS in growth media (10 % of the total). Ovalbumin in the extracts can promote cell proliferation, and components along the 12 kDa protein band have the potential to inhibit cell proliferation. Chick primary muscle cells applied with B EWE, an edible material that improved the cost and time efficiency of cultured meat production, effectively proliferated/differentiated. Therefore, EWE extracted using ethyl alcohol may be used as an FBS substitute to reduce animal sacrifices and should be considered a viable alternative to FBS for cultured meat.

ABSTRACT: This review was conducted to provide basic knowledge in developing new culture media for cultured meat production by compiling research on how the main media components affect cell proliferation and muscle differentiation. The culturing process can be divided into five processes: cell acquisition, cell proliferation, cell differentiation, myotube formation, and muscle maturation. To date, cultural media research has shown that amino acids, fatty acids, and carbohydrates mainly act as energy and nutrient sources for cell proliferation and muscle production, and minerals mainly play roles as regulators of cell proliferation and muscle production. Vitamins not only protect cells from oxidative stress but also promote cell growth and regulate cell growth-related genes. Additionally, cytokines play a role in regulating genes related to muscle proliferation and regeneration, and hormones, such as growth factors, insulin, and thyroid hormones, benefit muscle growth and regulation.