Article

Curing Pork Loin with Natural Converted Nitrite

Yea-Ji Kim1, Tae-Kyung Kim1, Ji Yoon Cha1, Jeong Heon Kim1, Min Kyung Park1, Samooel Jung2, Yun-Sang Choi1,*
Author Information & Copyright
1Research Group of Food Processing, Korean Food Research Institute, Wanju 55365, Korea.
2Division of Animal and Dairy Science, Chungnam National University, Daejeon 34134, Korea.
*Corresponding Author: Yun-Sang Choi. E-mail: kcys0517@kfri.re.kr.

© Copyright 2024 Korean Society for Food Science of Animal Resources. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Jun 13, 2024 ; Revised: Jul 23, 2024 ; Accepted: Jul 25, 2024

Published Online: Jul 30, 2024

Abstract

This study used ascorbic acid and ultrasound to improve the quality of pork loin marinated with pre-converted Angelica keiskei (PA). Pork loins were cured without nitrite (NC); with nitrite (PC); with PA (PA); with PA and ascorbic acid (PA+A); with PA and ultrasound treatment (PA+U); and with PA, ascorbic acid, and ultrasound treatments (PA+AU). The nitrite content in the curing solution was maintained at 180 ppm, except for NC. Cured loins with PA and ascorbic acid (PA+A and PA+AU) showed identical color values, curing efficiencies, and lower residual nitrite compared with that of PC. The pH of the PA-cured loins was lower than that of PC, and the moisture content was higher than that of NC. Following ultrasound treatment, protein solubility and tenderness were enhanced, whereas the myofibril fragmentation index did not significantly differ. PA effectively inhibited lipid oxidation in cured loins. In the PA+A treatment group, there was no difference in the redness of the cured meat color compared to PC, but the residual nitrite ion scavenging ability was close to 70%. Therefore, curing pork loins with pre-converted Angelica keiskei, ascorbic acid, and ultrasound treatment may be useful for producing high-quality meat products.

Keywords: cured pork loin; natural converted nitrite; ultrasound; curing efficiency; residual nitrite