Influence of Various Organic Acids on the Quality of Qcidified Northern Thai Green Chili Paste (Nam Prik Num) Product in Hermetically Sealed Bottle

Authors

  • Ratchadaporn Linruesee สาขาวิทยาศาสตร์และเทคโนโลยีการอาหาร คณะวิศวกรรมและอุตสาหกรรมเกษตร มหาวิทยาลัยแม่โจ้
  • Wichittra Daengprok สาขาวิทยาศาสตร์และเทคโนโลยีการอาหาร คณะวิศวกรรมและอุตสาหกรรมเกษตร มหาวิทยาลัยแม่โจ้
  • Kanokwan Tandee สาขาวิทยาศาสตร์และเทคโนโลยีการอาหาร คณะวิศวกรรมและอุตสาหกรรมเกษตร มหาวิทยาลัยแม่โจ้
  • Vachira Choommongkol สาขาวิชาเคมี คณะวิทยาศาสตร์ มหาวิทยาลัยแม่โจ้
  • Jaksuma Pongsetkul
  • Theeraphol Senphan สาขาวิทยาศาสตร์และเทคโนโลยีการอาหาร คณะวิศวกรรมและอุตสาหกรรมเกษตร มหาวิทยาลัยแม่โจ้

Abstract

Nam Prik Num is a Lanna Northern Thai food that is very popular food but it contains a short shelf life and perishable foods. Therefore, the objective of this research was to develop the pH adjustment of Nam Prik Num with citric acid, malic acid, ascorbic acid, and lactic acid as acidified food (pH = 4.6) prior containing in hermetically sealed bottle and pasteurized for shelf-life extension and to analyze product qualities. The pH-adjusted of Nam Prik Num with citric acid, malic acid, ascorbic acid, and lactic acid had higher a fine, soft and messy texture and syneresis more than the control samples. Moreover, the pH adjustment of Nam Prik Num with both types of acids had not different  on the % yield, chemical compositions (moisture, protein, ash, fat and fiber contents) and color values (lightness (L*), redness values (a*), yellowness value (b*) and ∆E*) pH values, water activity (aw), %syneresis and sulphur dioxide content (p≤0.05) but Nam Prik Num using citric acid had higher sensory acceptance scores by panelist in appearance, color, taste and texture characteristics than other acidified foods (p≤0.05). Therefore, citric acid is the most suitable acid to be used as acidified food in Nam Prik Num product prior containing in hermetically sealed bottle and pasteurized which can extend the shelf life of the product but the product had slightly sour taste. Keywords:  Organic acids, Sterilization, Nam Prik Num, Food acidulants

Author Biography

Theeraphol Senphan, สาขาวิทยาศาสตร์และเทคโนโลยีการอาหาร คณะวิศวกรรมและอุตสาหกรรมเกษตร มหาวิทยาลัยแม่โจ้

     

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Published

2022-05-18