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. 2014 Jan;96(1):436-40.
doi: 10.1016/j.meatsci.2013.08.001. Epub 2013 Aug 9.

Calcium and potassium content in beef: influences on tenderness and associations with molecular markers in Nellore cattle

Polyana Cristine Tizioto  1 , Caio Fernando Gromboni, Ana Rita de Araujo Nogueira, Marcela Maria de Souza, Maurício de Alvarenga Mudadu, Patricia Tholon, Antônio do Nascimento Rosa, Rymer Ramiz Tullio, Sérgio Raposo Medeiros, Renata Tieko Nassu, Luciana Correia de Almeida Regitano
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Free article

Calcium and potassium content in beef: influences on tenderness and associations with molecular markers in Nellore cattle

Polyana Cristine Tizioto et al. Meat Sci. 2014 Jan.
Free article

Abstract

Calcium (Ca) and potassium (K) are essential nutrients in animal nutrition. Furthermore, the Ca content can influence meat tenderness because it is needed by the proteolytic system of calpains and calpastatins, major factors in postmortem tenderization of skeletal muscles. K content, which is needed for muscle contraction, can also affect meat tenderness. This study showed that K positively affects the Warner-Bratzler shear force (WBSF), measured at 14days of meat aging, which means that higher levels of K are related to lower meat tenderness. Additionally, a significant effect (P≤0.015) of a SNP in the calcium-activated neutral protease 1 (CAPN1) gene on Ca content was observed. Metal content in beef can affect not only nutritional values but also meat quality traits. Part of this effect may be related to variation in specific genes.

Keywords: Calpain; Calpastatin; Ionone; KCNJ11; Metal; Shear force.

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