The Effect of Native Glucomannan on Growth Activity and Acid Production of Lactic Acid Bacteria
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Abstract
This work aimed to study the effects of native glucomannan on the growth and acid production of the bacterium Lactococcus lactis A7 in comparison with two commercial probiotic strains, L. pentosus and L. Acidophilus.From the results, it was found that the native glucomannan was found to be composed of two molecular weight fractions: high molecular weight glucomannan (1.9×106 Da) and low molecular weight glucomannan (1.4×103 Da), accounting for 58.08% and 41.92%, respectively, with polydispersity index (PDI) values of 1.6 and 1.2. Evaluation of its prebiotic properties in promoting probiotic growth revealed comparable growth trends, with the highest optical density (OD) values observed at 0.83±0.03, 0.70±0.01, 0.66±0.01, and 0.60±0.03 for L. lactis A7, L. pentosus, L. acidophilus, and inulin (control), respectively. Notably, L. lactis A7 cultured with native glucomannan exhibited enhanced growth compared to the inulin control, with the lowest pH recorded at 24 hours (5.75±0.02). Additionally, the highest prebiotic index (PI) values were observed at 1.23, 0.74, and 0.63 for L. lactis A7, L. pentosus, and L. acidophilus, respectively.
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เนื้อหาและข้อมูลในบทความที่ลงตีพิมพ์ในวารสารวิชชา มหาวิทยาลัยราชภัฏนครศรีธรรมราช ถือเป็นข้อคิดเห็นและความรับผิดชอบของผู้เขียนบทความโดยตรง ซึ่งกองบรรณาธิการวารสารไม่จำเป็นต้องเห็นด้วยหรือร่วมรับผิดชอบใด ๆ
บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการตีพิมพ์ในวารสารวิชชา มหาวิทยาลัยราชภัฏนครศรีธรรมราช ถือเป็นลิขสิทธ์ของวารสารวิชชา มหาวิทยาลัยราชภัฏนครศรีธรรมราช หากบุคคลหรือหน่วยงานใดต้องการนำข้อมูลทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อการกระทำการใด ๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษรจากวารสารวิชชา มหาวิทยาลัยราชภัฏนครศรีธรรมราชก่อนเท่านั้น
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