Evaluation of Acute and Subchronic Oral Toxicity of Copra Meal Hydrolysate: A Novel Candidate for Prebiotic in Sprague Dawley Rats.

IF 3 Q2 TOXICOLOGY
Journal of Toxicology Pub Date : 2025-06-05 eCollection Date: 2025-01-01 DOI:10.1155/jt/7235371
Jiraporn Tangthong, Francis Ayimbila, Massalin Nakphaichit, Suttipun Keawsompong
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引用次数: 0

Abstract

Copra meal hydrolysate (CMH) with high protein and mannooligosaccharides (MOS) was derived by β-mannanase hydrolysis. CMH has been shown to elicit health benefits via prebiotic properties. However, a systematic examination of its safety is required before effective utilization. This study assessed CMH oral acute toxicity at a single dose of 2000 mg/kg for 14 consecutive days, while a subacute toxicity test was conducted by daily oral administration of CMH at doses of 0.25, 0.5 and 1.0 mg/kg for 90 days using Sprague Dawley rats and following OECD guidelines 423 and 408. The acute toxicity study showed that the LD50 of CMH was over 2000 mg/kg since no mortality or abnormal clinical signs were observed at this dose. The subacute toxicity results showed that CMH did not induce any abnormalities in body weight, food and water consumption, clinical signs, haematology, clinical chemistry, organ weight and necropsy. Significant changes in some of the parameters were observed but most were not treatment-related and had no effect on animal health. No toxicity-related microscopic findings were recorded in the examined tissues (lung, heart, liver, spleen and kidneys). Oral administration of CMH had a 'no observed adverse effect level (NOAEL)' of 1.0 mg/kg for both male and female Sprague Dawley rats. CMH demonstrated a high level of safety in animal studies and can be considered a safe prebiotic substance for use in the food and nutraceutical industries.

椰粕水解物的急性和亚慢性口服毒性评价:一种新的益生元候选物。
利用β-甘露聚糖酶水解得到高蛋白、甘露寡糖的椰粕水解产物(CMH)。CMH已被证明通过益生元特性对健康有益。然而,在有效使用之前,需要对其安全性进行系统的检查。本研究评估了2000 mg/kg单剂量连续14天口服CMH的急性毒性,同时根据OECD指南423和408,用Sprague Dawley大鼠每天口服0.25、0.5和1.0 mg/kg剂量的CMH,连续90天进行亚急性毒性试验。急性毒性研究表明,由于在该剂量下未观察到死亡或异常临床症状,CMH的LD50超过2000 mg/kg。亚急性毒性试验结果显示,CMH未引起大鼠体重、食水消耗、临床体征、血液学、临床化学、脏器重量及尸检等异常。观察到一些参数发生了显著变化,但大多数参数与治疗无关,对动物健康没有影响。在检查的组织(肺、心、肝、脾和肾)中未发现毒性相关的显微镜检查结果。口服CMH对雄性和雌性Sprague Dawley大鼠的“未观察到不良反应水平(NOAEL)”均为1.0 mg/kg。CMH在动物实验中表现出很高的安全性,可以被认为是一种安全的益生元物质,可用于食品和营养保健行业。
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来源期刊
Journal of Toxicology
Journal of Toxicology TOXICOLOGY-
CiteScore
5.50
自引率
3.40%
发文量
0
审稿时长
10 weeks
期刊介绍: Journal of Toxicology is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies in all areas of toxicological sciences. The journal will consider articles looking at the structure, function, and mechanism of agents that are toxic to humans and/or animals, as well as toxicological medicine, risk assessment, safety evaluation, and environmental health.
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