增强甜菜根饮料中的细菌抑制能力:通过加速溶剂萃取和脉冲电场方法将苏枋心材提取物有效结合起来

IF 4.8 Q1 AGRICULTURE, MULTIDISCIPLINARY Journal of Agriculture and Food Research Pub Date : 2024-06-27 DOI:10.1016/j.jafr.2024.101268
Rattana Muangrat , Yaowares Thipsuwan
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引用次数: 0

摘要

本研究旨在探讨苏木心材提取物作为甜菜根汁中食源性致病菌抑制剂的潜力。该提取物采用加速溶剂萃取工艺(使用乙醇/水溶剂混合物(3:1 w/w),在 120 °C 和 1500 psi 下萃取 5 分钟)获得,每 73.6 克干燥苏木心材粉末可提取 10.04 克,提取率为 13.64%,巴西苷含量为 2.69%。该提取物与不同强度的脉冲电场(PEF)相结合,对大肠杆菌(E. coli)、金黄色葡萄球菌(S. aureus)、蜡样芽孢杆菌(B. cereus)和鼠伤寒沙门氏菌(S. typhimurium)进行了测试。结果表明,在 15 千伏/厘米、浓度分别为 3.91、5.86 和 11.73 毫克/毫升的条件下,将苏木心材提取物与 PEF 结合使用,可有效减少菌落总数和大肠菌群数量,并在 4 ℃ 下储存 7 天期间完全消除蜡样芽孢杆菌和伤寒沙门氏菌。此外,与热巴氏杀菌法和添加山梨酸钾法相比,这种组合的除菌效果更好。这些研究结果表明,苏木心材提取物可用作食品中的天然抗菌剂,特别是在甜菜根汁中,因为监管标准限制添加防腐剂。将苏木心材提取物与 PEF 结合使用,可高效杀灭食源性病原体,降低对消费者造成伤害的风险,确保食品安全。
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Enhancing bacterial inhibition in beetroot beverages: The potent combination of sappan heartwood extracts via accelerated solvent extraction and pulsed electric field methods

This study aimed to investigate the potential of sappan heartwood extract as an inhibitor of foodborne pathogenic bacteria in beetroot juice. The extract was obtained using an accelerated solvent extraction process (using an ethanol/water solvent mixture (3:1 w/w) at 120 °C and 1500 psi for 5 min), yielding 10.04 g per 73.6 g of dried sappan heartwood powder, with a percentage yield of 13.64 and 2.69 % brazilin. The extract was combined with pulsed electric fields (PEF) at different strengths and tested against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), Bacillus cereus (B. cereus), and Salmonella typhimurium (S. typhimurium). Results showed that the combination of sappan heartwood extract and PEF at 15 kV/cm and concentrations of 3.91, 5.86, and 11.73 mg/mL effectively reduced the total plate count and coliform bacteria count, and completely eliminated B. cereus and S. typhimurium during 7 days of storage at 4 °C. Furthermore, this combination was found to be more efficient in bacterial elimination compared to thermal pasteurization and potassium sorbate addition. These findings suggest that sappan heartwood extract can be used as a natural antimicrobial agent in food products, especially in beetroot juice, where regulatory standards restrict the addition of preservatives. Using sappan heartwood extract in combination with PEF is highly effective in killing foodborne pathogens, reducing the risk of consumer harm and ensuring food safety.

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来源期刊
CiteScore
5.40
自引率
2.60%
发文量
193
审稿时长
69 days
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