Biodegradation of naphthalene using Kocuria rosea isolated from a Sawmill in Ikenne, Southwestern Nigeria

IF 2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Pure and Applied Chemistry Pub Date : 2024-05-06 DOI:10.1515/pac-2023-1136
Esther Nkechi Ezima, Ayodeji Olasore Awotula, Bukunola Oluyemisi Adegbesan, Ifabunmi Oduyemi Osonuga, Georgia Chinemenwa Agu, Enitan Omobolanle Adesanya, Kuburat Temitope Odufuwa, Bamidele Sanya Fagbohunka
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Abstract

Naphthalene, a common member of the polycyclic aromatic hydrocarbons (PAHs) found in various industrial applications, has garnered attention due to its genotoxic, mutagenic, and potentially carcinogenic effects on living organisms. Concerns have escalated regarding the widespread presence of naphthalene in the environment, its resistance to biodegradation, capacity for bioaccumulation, and associated adverse impacts. In response, numerous pilot treatment approaches have been explored to mitigate the economic consequences and prevent the degradation of soil and water quality resulting from naphthalene pollution. This study investigates the degradation of naphthalene using Kocuria rosea, a microorganism previously isolated from sawdust samples collected from a Sawmill in Ikenne, Ogun State, Southwestern Nigeria. Kocuria rosea was cultivated in nutrient broth (NB) for 24 h, and its growth was quantified through UV–Visible spectrophotometric analysis. The phytotoxicity of both untreated and treated naphthalene solutions was assessed by measuring their impact on the germination of Zea mays (corn) seeds. Furthermore, biodegradation of naphthalene was confirmed by analyzing FT-IR spectra. The results indicate that naphthalene exhibits phytotoxic effects on Z. mays germination, whereas treatment with the Kocuria rosea solution substantially increased the germination rate from 13.3 % to 46.67 %. FT-IR analysis reveals that Kocuria rosea effectively degrades naphthalene, as evidenced by the disappearance of characteristic peaks at 3049.56, 1593.25, 958.65, and 781.2. In conclusion, Kocuria rosea, isolated from a Sawmill in Ikenne, demonstrates significant potential for the bioremediation of naphthalene, offering promise as an environmentally friendly and cost-effective approach for mitigating naphthalene pollution.
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利用从尼日利亚西南部伊肯内锯木厂分离出来的 Kocuria rosea 生物降解萘
萘是各种工业应用中常见的多环芳烃(PAHs)的一种,因其对生物体具有遗传毒性、诱变性和潜在致癌性而备受关注。人们对环境中广泛存在的萘及其生物降解阻力、生物累积能力和相关不利影响的担忧不断升级。为此,人们探索了许多试验性处理方法,以减轻萘污染造成的经济后果,防止土壤和水质恶化。本研究调查了利用 Kocuria rosea 降解萘的情况,Kocuria rosea 是一种微生物,之前从尼日利亚西南部奥贡州 Ikenne 一家锯木厂收集的锯屑样本中分离出来。Kocuria rosea 在营养肉汤(NB)中培养 24 小时,其生长情况通过紫外可见分光光度法进行定量分析。通过测量萘溶液对玉米种子萌发的影响,评估了未经处理和处理的萘溶液的植物毒性。此外,还通过分析傅立叶变换红外光谱确认了萘的生物降解。结果表明,萘对玉米种子的萌发具有植物毒性,而用 Kocuria rosea 溶液处理后,萌发率从 13.3% 大幅提高到 46.67%。傅立叶变换红外光谱分析显示,Kocuria rosea 能有效降解萘,其 3049.56、1593.25、958.65 和 781.2 的特征峰消失就是证明。总之,从伊肯内的一家锯木厂分离出来的 Kocuria rosea 具有对萘进行生物修复的巨大潜力,有望成为减轻萘污染的一种环境友好型和具有成本效益的方法。
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来源期刊
Pure and Applied Chemistry
Pure and Applied Chemistry 化学-化学综合
CiteScore
4.00
自引率
0.00%
发文量
60
审稿时长
3-8 weeks
期刊介绍: Pure and Applied Chemistry is the official monthly Journal of IUPAC, with responsibility for publishing works arising from those international scientific events and projects that are sponsored and undertaken by the Union. The policy is to publish highly topical and credible works at the forefront of all aspects of pure and applied chemistry, and the attendant goal is to promote widespread acceptance of the Journal as an authoritative and indispensable holding in academic and institutional libraries.
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