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Antibacterial Effect of Prodigiosin on Uropathogenic Escherichia coli. 芥子皂苷对尿路致病性大肠杆菌的抑菌作用。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-28 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/6668394
Nikhitha Joshy, Biranthabail Dhanashree

Antibiotic resistance and biofilm formation are becoming more common in uropathogenic Escherichia coli (UPEC). Hence, the study aims to determine the antibiogram of commonly prescribed antibiotics and assess prodigiosin's antibacterial activity against UPEC. During the study, 175 UPEC isolates were identified biochemically, and their antibiogram was studied by the VITEK 2 system. Prodigiosin was extracted from Serratia marcescens MTCC 97. The MIC of prodigiosin against UPEC strains was detected by the microbroth dilution method. The majority of the UPEC strains (n = 135) had MIC between 15 and 30 mg/mL. No significant association was observed between the MIC of prodigiosin and the antibiogram. Biofilm assay was performed by the microtiter plate method using media with and without added prodigiosin. In media without prodigiosin, most UPEC isolates were nonbiofilm formers (NBF-55.42%), followed by weak (21.14%), moderate (MBF-13.71%) and strong biofilm formers (SBF-9.7%). When the same test was performed in media with added prodigiosin, NBF decreased to 30.28%, while SBF, MBF and WBF increased to 20%, 26.85% and 22.85%, respectively. This change in biofilm production was statistically significant (p < 0.05, Wilcoxon signed-rank test). The effect of prodigiosin on fimH virulence gene was evaluated using PCR. The fimH gene was present in 159 (90.85%) isolates cultured in medium devoid of prodigiosin, whereas in prodigiosin-containing media, 132 (83.01%) isolates were positive for the fimH gene and 27 (16.98%) were negative (p < 0.05, McNemar's test), suggesting that the fimH-negative isolates had either considerable suppression of the gene's transcription or gene expression pathways. Further, biofilm production increased when prodigiosin inhibited the fimH gene, suggesting a gene-dependent reaction that may have compelled UPEC to adopt a stress-response phenotype that favours nonspecific surface attachment to form biofilm for survival. Therefore, the effect of prodigiosin on biofilms seems to be associated with the expression of fimH, indicating a gene-dependent response.

抗生素耐药性和生物膜形成在尿路致病性大肠杆菌(UPEC)中变得越来越常见。因此,本研究旨在确定常用抗生素的抗菌谱,并评价芥子红素对UPEC的抗菌活性。对175株UPEC分离株进行了生化鉴定,并用VITEK 2系统对其抗菌谱进行了研究。从粘质沙雷氏菌MTCC 97中提取了神曲菌素。用微肉汤稀释法测定了芥子皂苷对UPEC菌株的MIC。大多数UPEC菌株(n = 135)的MIC在15 ~ 30 mg/mL之间。抗菌谱与子黄素的MIC无显著相关性。生物膜试验采用微滴板法,培养基中分别添加和不添加芥子红。在不含菌红素的培养基中,大多数UPEC分离菌为非生物成膜菌(NBF-55.42%),其次为弱(21.14%)、中等(MBF-13.71%)和强生物成膜菌(SBF-9.7%)。在添加prodigiosin的培养基中进行相同的试验,NBF降低到30.28%,SBF、MBF和WBF分别提高到20%、26.85%和22.85%。这种生物膜产量的变化具有统计学意义(p . fimH毒力基因用PCR进行了评估。在不含prodigiosin的培养基中,有159株(90.85%)分离到fimH基因,而在含prodigiosin的培养基中,有132株(83.01%)分离到fimH基因阳性,27株(16.98%)分离到fimH基因阴性(p < 0.05, McNemar’s test),说明fimH阴性分离株对该基因的转录或表达途径有明显的抑制作用。此外,当prodigiosin抑制fimH基因时,生物膜的产生增加,这表明一种基因依赖性反应可能迫使UPEC采用应激反应表型,这种表型有利于非特异性表面附着形成生物膜以生存。因此,芥绿素对生物膜的影响似乎与fimH的表达有关,表明这是一种基因依赖性反应。
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引用次数: 0
The Potential Protective Effects of EGCG Against Epilepsy-Induced Damage in Rats by Mitigating Oxidative Stress, Inflammation, and Apoptosis. EGCG通过减轻氧化应激、炎症和细胞凋亡对大鼠癫痫性损伤的潜在保护作用。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-22 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/8209714
Sarah Alatawi, Manal S Albalawi, Ruba M Alfaifi, Rand Al-Twalhy, Manal D Al-Johani, Danah Alanazi, Rinad M Al-Otaibi, Hanan M Hassan, Mohammed M H Al-Gayyar

We conducted this study to evaluate the protective effects of Epigallocatechin-3-gallate (EGCG) against epilepsy in rats, with a specific focus on its potential to mitigate oxidative stress, inflammation, and apoptosis. Epilepsy was induced in rats using pentylenetetrazol (PTZ), followed by treatment with 20 mg/kg of EGCG. The effects of EGCG were assessed on seizure severity and frequency, as well as acetylcholinesterase (AChE) activity. Brain sections were stained with cresyl violet and immune-stained with anti-Nrf2 antibody. Furthermore, expressions and concentrations of B-Cell Lymphoma 2 (BCL2), Nuclear Factor Erythroid 2-Related Factor-2 (Nrf2), nuclear factor κB (NFκB), BCL2-associated X (BAX), tumor necrosis factor-α (TNF-α), and Interleukin-1 β (IL-1β) in brain tissues were analyzed. Rats showed significant behavioral improvement following EGCG treatment. Analysis of the dentate gyrus sections demonstrated a modest increase in the staining intensity of Nissl granules after EGCG. Additionally, EGCG was observed to increase the expression levels of BCL2, Nrf2, and Heme Oxygenase-1 (HO-1), while concurrently reducing the expression of BAX, NF-κB, TNF-α, and IL-1β. In conclusion, EGCG demonstrates protective effects against epilepsy. The underlying mechanisms may be attributed to its capacity to increase antioxidant activity by the upregulation of Nrf2 and HO-1. EGCG appears to mitigate inflammation by downregulating NF-κB, TNF-α, and IL-1β, thereby decreasing cellular apoptosis through the downregulation of BAX and upregulation of BCL-2.

我们进行了这项研究,以评估表没食子儿茶素-3-没食子酸酯(EGCG)对大鼠癫痫的保护作用,特别关注其减轻氧化应激、炎症和细胞凋亡的潜力。用戊四唑(PTZ)诱导大鼠癫痫,然后用20 mg/kg的EGCG治疗。评估EGCG对癫痫发作严重程度、发作频率以及乙酰胆碱酯酶(AChE)活性的影响。脑切片用甲酚紫染色,抗nrf2抗体免疫染色。分析脑组织中b细胞淋巴瘤2 (BCL2)、核因子红系2相关因子-2 (Nrf2)、核因子κB (NFκB)、BCL2相关X (BAX)、肿瘤坏死因子-α (TNF-α)、白细胞介素-1β (IL-1β)的表达和浓度。大鼠在EGCG治疗后表现出明显的行为改善。齿状回切片分析显示,EGCG后尼塞尔颗粒的染色强度略有增加。此外,EGCG还能提高BCL2、Nrf2和血红素加氧酶-1 (HO-1)的表达水平,同时降低BAX、NF-κB、TNF-α和IL-1β的表达。总之,EGCG对癫痫有保护作用。其潜在机制可能是通过上调Nrf2和HO-1来增加抗氧化活性。EGCG似乎通过下调NF-κB、TNF-α和IL-1β来减轻炎症,从而通过下调BAX和上调BCL-2来减少细胞凋亡。
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引用次数: 0
Biology and Morphometric Characterization of the Invasive Pest Spodoptera frugiperda in Agricultural Regions of South Sulawesi, Indonesia: Implications for Pest Management. 印度尼西亚南苏拉威西农业区入侵害虫Spodoptera frugiperda的生物学和形态计量学特征:对害虫管理的启示。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-22 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/9175678
Melina Melina, Sulaeha Sulaeha, Nurfauziyah Nurfauziyah

Spodoptera frugiperda (fall armyworm) is an exotic pest from the American continent that has invaded agricultural lands in Indonesia, particularly affecting maize crops. This study aimed to investigate the biological and morphometric characteristics of S. frugiperda larvae fed with baby corn under controlled laboratory conditions. Several biological parameters were observed, including the preoviposition, oviposition, and postoviposition periods, egg production and frequency, and the number of larval instars. The study also monitored the duration of the prepupal and pupal stages, mortality rates, sex ratios, adult lifespan, and body size. Results indicated that S. frugiperda exhibits high reproductive capacity, with females laying an average of 133.25 eggs that hatch within 1-2 days. Larvae underwent six instars over 14-16 days, and the pupal stage lasted 9-11 days before emerging as adults. Male adults lived for 6-8 days, while females survived longer, between 9 and 13 days. The total lifespan from egg to adult death averaged 30 days for males and 35 days for females. High mortality was observed in the pupal stage and the first larval instar. Morphometric data revealed gradual increases in larval length from the first instar (2.25 mm) to the sixth instar (32 mm), with pupae reaching 16 mm in length, and adults measuring 14 and 13 mm for males and females, respectively. The relatively small body size of S. frugiperda contributes to its ability to disperse and invade agricultural areas in Indonesia. This study provides valuable insights into the biology and morphometrics of S. frugiperda, which may serve as a foundation for developing sustainable pest management strategies in the region.

夜蛾(Spodoptera frugiperda)是一种来自美洲大陆的外来害虫,已入侵印度尼西亚的农田,尤其影响玉米作物。本研究旨在研究在控制的实验室条件下,以玉米幼仔为食的frugiperda幼虫的生物学和形态特征。观察了产卵前、产卵期、产卵期、产卵次数、幼虫数等生物学参数。该研究还监测了蛹前和蛹期的持续时间、死亡率、性别比例、成虫寿命和体型。结果表明,沙蚕具有较高的繁殖能力,1 ~ 2 d内平均产卵133.25枚。幼虫在14 ~ 16 d内经历6个龄期,蛹期为9 ~ 11 d,形成成虫。雄成虫寿命6-8天,雌成虫寿命更长,在9 - 13天之间。从卵到成虫死亡的总寿命雄性平均为30天,雌性为35天。蛹期和第一幼虫期死亡率较高。形态测量数据显示,从1龄(2.25 mm)到6龄(32 mm),幼虫体长逐渐增加,雄雌蛹体长可达16 mm,成虫体长分别为14 mm和13 mm。相对较小的体型有助于其在印度尼西亚分散和入侵农业区的能力。本研究为该地区沙蚕的生物学和形态计量学研究提供了有价值的见解,可为该地区制定可持续的害虫防治策略提供依据。
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引用次数: 0
Prevalence and Determinants of Polypharmacy: A Cross-Sectional Study Among Elderly Patients With Cardiovascular Diseases in Outpatient Clinics. 多药的患病率和决定因素:门诊老年心血管疾病患者的横断面研究
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-18 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/6641747
Negin Faramarzi Nasab, Shahab Rezaeian, Saeed Ezadi, Alireza Khatony

Polypharmacy, commonly defined as the concurrent use of five or more medications, is a pressing public health concern among older adults with cardiovascular disease, given its strong association with adverse drug-drug interactions, medication errors, and increased hospitalization rates. Despite its clinical significance, evidence from low- and middle-income countries, including Iran, remains limited. This study sought to determine the prevalence of polypharmacy and identify its key determinants among elderly cardiovascular patients in Kermanshah, Iran. In this cross-sectional survey of 426 participants, eligible participants were recruited using convenience sampling, and demographic, clinical, and medication-related data were collected using structured questionnaires. Statistical analyses, including chi-square tests and multivariate logistic regression, were employed to examine associations. The findings revealed that 60.1% of participants were taking five to nine medications daily. Polypharmacy was significantly associated with lower educational attainment and income, prolonged treatment duration, hospitalization history, multimorbidity, insufficient pharmacist counseling, and limited knowledge of medications and their potential adverse effects. Multivariate analysis identified the number of chronic conditions (AOR: 5.05, p < 0.001), hospitalization history (AOR: 5.15, p < 0.001), and poor medication knowledge (AOR: 6.48, p = 0.017), as independent predictors. These results highlight the urgent need for targeted, evidence-based interventions, particularly pharmacist-led counseling and patient education programs, to mitigate the burden and adverse clinical outcomes of polypharmacy, especially in resource-constrained healthcare settings.

多药,通常定义为同时使用五种或更多种药物,是老年心血管疾病患者迫切关注的公共卫生问题,因为它与不良药物相互作用、用药错误和住院率增加密切相关。尽管具有临床意义,但来自包括伊朗在内的低收入和中等收入国家的证据仍然有限。本研究旨在确定伊朗Kermanshah老年心血管患者中多种用药的流行情况,并确定其关键决定因素。本次横断面调查共纳入426名参与者,采用方便抽样方法招募符合条件的参与者,采用结构化问卷收集人口学、临床和药物相关数据。统计分析,包括卡方检验和多元逻辑回归,用于检验相关性。研究结果显示,60.1%的参与者每天服用5到9种药物。多种用药与受教育程度低、收入低、治疗时间长、住院史、多病、药师咨询不足、对药物及其潜在不良反应的了解有限显著相关。多因素分析发现,慢性疾病数量(AOR: 5.05, p < 0.001)、住院史(AOR: 5.15, p < 0.001)和不良用药知识(AOR: 6.48, p = 0.017)是独立预测因素。这些结果强调,迫切需要有针对性的、基于证据的干预措施,特别是药剂师主导的咨询和患者教育计划,以减轻多重用药的负担和不良临床结果,特别是在资源有限的医疗保健环境中。
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引用次数: 0
Impact of Alligator Weed (Alternanthera philoxeroides) Invasion on Floral Composition and Soil Microbiota. 短吻鳄杂草入侵对植物组成和土壤微生物群的影响。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-18 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/7359416
Shristi Khanal, Hari Sharan Adhikari, Mukesh Kumar Chettri

Plant invasion modifies the aboveground and belowground biota directly or indirectly via allelopathic effect. This study aimed to ascertain if the invasive species Alternanthera philoxeroides impacts plant diversity, plant composition, and soil microbes or not. The soil microbial activity (CO2 release) and soil pH were also recorded. The plant communities invaded and uninvaded with Alternanthera philoxeroides were examined using the quadrat method. Soil samples were collected from 0 to 10 cm depth, and the culture method was used for soil microbial analysis. The plant species richness and soil fungi were found to be reduced at A. philoxeroides invaded plots than at uninvaded plots. The IVI of all common species such as Cynodon dactylon, Bidens pilosa, and Trifolium repens was highly suppressed in the invaded zone. The parameters like plant diversity indices, colony count of soil microbes, soil microbial activity (CO2 release), and soil pH were found to be reduced at invaded sites than at uninvaded sites. The results indicated that the invasive A. philoxeroides modifies the plant community composition, and the underlying mechanism for the change is possibly by altering the soil microbiota, microbial respiration, and soil pH with their successful invasion.

植物入侵通过化感作用直接或间接地改变地上和地下生物群。摘要本研究旨在探讨外来入侵植物互花菊对植物多样性、植物组成和土壤微生物的影响。同时记录了土壤微生物活性(CO2释放)和pH值。采用样方法对被侵染和未侵染的植物群落进行了调查。土壤取样深度为0 ~ 10 cm,采用培养法进行土壤微生物分析。结果表明,黄杨入侵地的植物物种丰富度和土壤真菌数量明显低于未入侵地。在入侵区,长爪蟹、毛毛拜登、三叶草等常见树种的IVI均受到高度抑制。入侵样地的植物多样性指数、土壤微生物菌落数、土壤微生物活性(CO2释放)和土壤pH值均低于未入侵样地。结果表明,黄花蓟马入侵后改变了植物群落组成,其机制可能是通过改变土壤微生物群、微生物呼吸和土壤pH值来实现的。
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引用次数: 0
Antibacterial Potential and Chemical Composition of Shiitake Mushroom (Lentinus edodes (Berk.) Sing.) Extract Against Pathogenic Bacteria. 香菇(Lentinus edodes, Berk.)的抑菌活性及化学成分唱歌。)抗致病菌提取物。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-18 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/6089332
Waraporn Sutthisa, Pearploy Kamlangmak, Nattaya Srisawad

Shiitake mushrooms (Lentinus edodes (Berk.) Sing.) have been widely recognized for their bioactive properties, including antimicrobial activity. This study aimed to investigate the antibacterial potential and chemical composition of shiitake mushroom extracts prepared using different solvents (95% ethanol, ethyl acetate, and chloroform). The highest extraction yield (31.16%) was obtained with 95% ethanol. The antimicrobial activity of the extracts was evaluated using the paper disc diffusion method against nine pathogenic bacterial isolates, including Gram-positive (Bacillus cereus, Staphylococcus aureus, and S. aureus DMST20654) and Gram-negative (Escherichia coli, E. coli ATCC25922, Enterobacter cloacae, Pseudomonas aeruginosa, Serratia marcescens, and Salmonella enterica serovar Typhi ATCC16122) bacteria. Plates were incubated at 37°C for 24 h. All experiments were performed in triplicate. The ethyl acetate extract exhibited the strongest antibacterial activity, with the largest inhibition zone observed for E. coli ATCC25922 (30.00 ± 0.00 mm), followed by S. enterica serovar Typhi ATCC16122 (28.33 ± 2.00 mm). The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) assays confirmed the superior antibacterial potential of the ethyl acetate extract, particularly against S. aureus DMST20654 (MIC = 1.95 mg/mL, MBC = 31.25 mg/mL). Gas chromatography-mass spectrometry (GC-MS) analysis identified key bioactive compounds, including ergosterol (62.38%, %Prob 62.6 in the chloroform extract) and linoleic acid (28.65%, %Prob 56.5 in the ethyl acetate extract), which are known for their antimicrobial properties. The findings highlight the potential of ethyl acetate-extracted shiitake mushroom compounds as natural antibacterial agents, with applications for food preservation, nutraceuticals, and pharmaceuticals.

香菇(Lentinus edodes))因其生物活性,包括抗菌活性而被广泛认可。研究了不同溶剂(95%乙醇、乙酸乙酯和氯仿)制备的香菇提取物的抑菌活性和化学成分。当乙醇浓度为95%时,提取率最高,为31.16%。采用纸片扩散法对革兰氏阳性菌株(蜡样芽孢杆菌、金黄色葡萄球菌和金黄色葡萄球菌DMST20654)和革兰氏阴性菌株(大肠杆菌、大肠杆菌ATCC25922、阴沟肠杆菌、铜绿假单胞菌、粘质沙雷菌和伤寒沙门氏菌ATCC16122)进行抑菌活性评价。37℃孵育24 h。所有的实验都是三次重复。乙酸乙酯提取物抑菌活性最强,对大肠杆菌ATCC25922(30.00±0.00 mm)的抑菌带最大,其次是伤寒链球菌ATCC16122(28.33±2.00 mm)。最小抑菌浓度(MIC)和最小杀菌浓度(MBC)试验证实乙酸乙酯提取物具有较好的抑菌效果,对金黄色葡萄球菌DMST20654 (MIC = 1.95 mg/mL, MBC = 31.25 mg/mL)具有较好的抑菌效果。气相色谱-质谱(GC-MS)分析确定了主要的生物活性化合物,包括麦角甾醇(62.38%,氯仿提取物中约62.6 %)和亚油酸(28.65%,乙酸乙酯提取物中约56.5 %),这些化合物以其抗菌特性而闻名。这一发现突出了乙酸乙酯提取的香菇化合物作为天然抗菌剂的潜力,在食品保鲜、营养食品和药品方面具有应用价值。
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引用次数: 0
Metabolites Evaluation, Cytotoxicity, and Teratogenicity Analysis of Selected Medicinal Plants. 部分药用植物代谢物评价、细胞毒性和致畸性分析。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-18 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/5233425
Mary Jhane G Valentino, Tutik Sri Wahyuni

The study determined the cytotoxicity and teratogenicity of 28 species of medicinal plants. The phytochemical properties and antioxidant activity were also evaluated. Plant materials were extracted using ethanol as solvent. Brine shrimp assay was performed for cytotoxicity test and zebra fish embryo-based teratogenicity testing. The phytochemical constituents were detected using thin-layer chromatography, while the total phenolics and antioxidant activity were determined using the Folin-Ciocalteu method and DPPH free radical scavenging assay, respectively. Results of phytochemical screening revealed the presence of 12 phytochemicals in the selected medicinal plants, which include essential oils, triterpenes, phenols, fatty acids, sugar, anthraquinones, coumarins, anthrone, tannins, flavonoids, steroids, and alkaloids. Total phenolic content which ranges from 125.45 to 568.99 GAE/g and antioxidant activity of 40.25%-82.56% were recorded from M. calabura and Z. americana, respectively. For the cytotoxicity test, M. paniculata registered the least LC50 of 1157.42 ppm, while C. asiatica has the highest LC50 at 33,252.69 ppm. Meanwhile, for the teratogenicity testing, various morphological abnormalities and teratogenic effects were observed in different developmental stages of zebrafish, which are lethal and sublethal, such as coagulation, yolk sac, and pericardial edema, and malformations (head, spines, and tail), growth retardation, restricted movement, and pigmentation. The LC50 values for teratogenicity suggest low to nonteratogenicity of the plant extracts with values ranging from 324 ppm in A. brasiliana to 11,933 ppm in P. cablin.

本研究测定了28种药用植物的细胞毒性和致畸性。并对其植物化学性质和抗氧化活性进行了评价。以乙醇为溶剂提取植物材料。采用卤虾法进行细胞毒性试验和斑马鱼胚胎致畸试验。采用薄层色谱法测定其化学成分,采用Folin-Ciocalteu法测定其总酚类物质含量,采用DPPH自由基清除法测定其抗氧化活性。植物化学筛选结果显示,所选药用植物中存在12种植物化学物质,包括精油、三萜、酚类、脂肪酸、糖、蒽醌、香豆素、蒽酮、单宁、黄酮类、类固醇和生物碱。柠条总酚含量为125.45 ~ 568.99 GAE/g,抗氧化活性为40.25% ~ 82.56%。在细胞毒性试验中,M. paniculata的LC50最低,为1157.42 ppm,而C. asiatica的LC50最高,为33,252.69 ppm。同时,对斑马鱼进行致畸性检测,观察斑马鱼在不同发育阶段的致死性和亚致死性形态异常和致畸效应,如凝血、卵黄囊、心包水肿等,以及头、棘、尾畸形、生长迟缓、运动受限、色素沉着等。植物提取物的致畸性LC50值从324 ppm到11933 ppm不等,表明其致畸性低至无致畸性。
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引用次数: 0
Extraction and Comparative Assessment of the Physicochemical Properties of Pectin From Four Fruit Wastes in Ghana. 加纳四种水果废弃物中果胶的提取及理化性质比较研究。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-17 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/9954324
Prince George Junior Acquah, Mariam El Boakye-Gyasi, Frederick William Akuffo Owusu, Desmond Asamoah Bruce Otu, Raphael Johnson, Marcel Tunkumgnen Bayor

Substantial amounts of waste and by-products are generated annually from the fruit processing industry - an issue with detrimental environmental, socioeconomic and health impacts. Concerted efforts are currently geared towards curtailing this canker, particularly waste valorisation into eco-friendly, economical and sustainable biopolymers such as pectin. This study focused on the extraction and comparative analysis of the physicochemical properties of pectin from four fruit wastes: Mangifera indica L. (Keitt variety), Carica papaya (Solo variety), Ananas comosus (MD2 variety) and Citrus limon (Eureka variety). Pectin was extracted using the conventional citric acid and NaOH processes. Subsequently, the yield, proximate contents and physicochemical properties of the extracted pectins were analysed and compared. The orthogonal data transformation tool, principal component analysis (PCA), was used to highlight relationships between the extracted pectins. Rapid-setting high methoxyl (DE > 72%) and pharmaceutical-grade pectins were extracted (yield ranging from 6.72% to 26.60%) irrespective of the extraction method. All the pectins conformed to high-quality standards (anhydrouronic acid content > 60%, ash content < 2% and moisture content < 5%). FT-IR analysis revealed that the primary structure of pectin was maintained in all samples. Moreover, all the pectins were sparingly soluble in water (25°C) and exhibited statistically significant (p < 0.0001) variations in the swelling and water-holding properties. PCA demonstrated the clustering of pectins from the same sources despite extraction techniques, highlighting that despite the variations, pectins from the same source exhibit some degree of similarity. The present study presents alternative high-quality pectins with good physicochemical properties that can be utilised in pharmaceutical dosage forms.

水果加工业每年产生大量的废物和副产品,这是一个对环境、社会经济和健康产生有害影响的问题。目前,人们正在共同努力减少这种危害,特别是将废物转化为环保、经济和可持续的生物聚合物,如果胶。本研究主要从Mangifera indica L. (Keitt品种)、Carica papaya (Solo品种)、Ananas comosus (MD2品种)和Citrus limon (Eureka品种)四种水果废弃物中提取果胶,并对其理化性质进行了比较分析。采用常规柠檬酸法和氢氧化钠法提取果胶。随后,对所提取果胶的产率、近似含量和理化性质进行了分析比较。利用正交数据转换工具主成分分析(PCA)来突出所提取果胶之间的关系。无论采用何种提取方法,均可提取出快速成型的高甲氧基果胶(DE为72%)和药用级果胶(得率为6.72% ~ 26.60%)。所有果胶均符合优质标准(无水醛酸含量60%,灰分< 2%,水分< 5%)。FT-IR分析显示,所有样品中果胶的初级结构都保持不变。此外,所有的果胶在水(25°C)中都是可溶的,并且在膨胀和保水性方面表现出统计学上显著(p < 0.0001)的变化。主成分分析显示,尽管采用了不同的提取技术,但来自同一来源的果胶仍然具有聚类性,并强调尽管存在差异,但来自同一来源的果胶表现出一定程度的相似性。本研究提出了具有良好物理化学性质的可替代的高质量果胶,可用于药物剂型。
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引用次数: 0
Phytochemical Analysis and Antifungal Activity of Aloe vera Extract Against Candida albicans. 芦荟提取物对白色念珠菌的植物化学分析及抗真菌活性研究。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-10 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/4496097
Hazem Sawalha, Hadeel Yousef, Rahaf Shalabi, Reem Hamamreh, Asma Kmail, Iman Qoraan

Alternative medicine is pursued as a preference to conventional medicine due to growing resistance to antimicrobial medications. The primary purpose of this study is to assess the antifungal activity and phytochemical content of Aloe vera growing in the Palestinian region, with a particular emphasis on the bioactive potentials of this plant against Candida albicans. Extracts from whole leaves and gel were evaluated against C. albicans using MIC and broth microdilution methods. Findings revealed that the whole leaf extract demonstrated superior antifungal activity compared to the gel, with maximum efficiencies of 35.17% and 8.57%, respectively. Notably, the MIC50 values for whole leaf and gel extracts were approximately 75.42 mg/mL and 184.93 mg/mL, respectively. Phytochemical analysis exhibited considerable levels of bioactive proteins, sugars, and starch in whole leaf extracts, regardless of the extraction method, whereas gel extracts displayed lower quantities of these substances. The total phenol content was 1.278% in the entire leaf extract and 1.015% in the gel, while total flavonoid content was measured at 0.238% in the whole leaf extract compared to 0.1875% in the gel. The presence of phenols effective against C. albicans indicates its potential utility in alternative medicine for treating diseases caused by this fungus. Our study demonstrated that A. vera grown in the Palestinian region has significant levels of bioactive content, highlighting the importance of investigating distinct parts of A. vera for their antifungal therapeutic attributes. While many of these plants have been studied globally, a localized inquiry is necessary due to their unique qualities and potential differences within the Palestinian context. Climate, soil, and ecological conditions can influence a plant's extract chemical composition and potency, leading to various therapeutic or pharmacological effects.

由于对抗菌药物的耐药性日益增加,替代医学作为一种优先选择而受到追捧。本研究的主要目的是评估生长在巴勒斯坦地区的芦荟的抗真菌活性和植物化学成分,特别强调这种植物对白色念珠菌的生物活性潜力。采用MIC法和肉汤微量稀释法对全叶提取物和凝胶提取物的抗白色念珠菌作用进行了评价。结果表明,与凝胶相比,全叶提取物具有更强的抗真菌活性,最高效率分别为35.17%和8.57%。全叶和凝胶提取物的MIC50值分别约为75.42 mg/mL和184.93 mg/mL。植物化学分析显示,无论提取方法如何,全叶提取物中都含有相当高水平的生物活性蛋白质、糖和淀粉,而凝胶提取物中这些物质的含量较低。全叶提取物中总酚含量为1.278%,凝胶中总酚含量为1.015%;全叶提取物中总黄酮含量为0.238%,凝胶中总黄酮含量为0.1875%。对白色念珠菌有效的酚类物质的存在表明其在治疗由该真菌引起的疾病的替代药物中的潜在效用。我们的研究表明,在巴勒斯坦地区生长的真丝草具有显著水平的生物活性含量,突出了研究真丝草抗真菌治疗属性的不同部分的重要性。虽然许多这些植物已经在全球范围内进行了研究,但由于它们的独特品质和在巴勒斯坦环境中的潜在差异,有必要进行局部调查。气候、土壤和生态条件可以影响植物提取物的化学成分和效力,导致各种治疗或药理作用。
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引用次数: 0
Multitarget Anti-Candida Activity of Thai Plant Extracts and Essential Oils: Inhibiting Biofilm Formation, Denture Adhesion, and Germ Tube Formation. 泰国植物提取物和精油的多靶点抗念珠菌活性:抑制生物膜形成、义齿粘附和胚芽管形成。
IF 2.3 Q2 BIOLOGY Pub Date : 2025-12-10 eCollection Date: 2025-01-01 DOI: 10.1155/sci5/1766872
Premnapa Sisopa, Supaporn Lamlertthon, Ruchadaporn Kaomongkolgit, Pratthana Chomchalao, Waree Tiyaboonchai

This study aimed to evaluate the efficacy of Thai plant extracts (PEs) and essential oils (EOs) against reference and clinical isolate strains of Candida albicans, focusing on their ability to inhibit biofilm formation, cell adhesion to denture acrylic, and germ tube formation. The minimum biofilm inhibition concentration (MBIC) and the minimum biofilm eradication concentration (MBEC) were determined. The impact on adhesion to denture acrylic was determined by XTT assay, and germ tube inhibition was evaluated using the counting chamber. The results revealed that cinnamon bark oil exhibited the lowest MBIC90 and MBEC90 values (0.156 mg/mL and 0.313 mg/mL, respectively) against both C. albicans strains, followed by lemongrass oil, clove bud oil, Alpinia galanga extract, and Piper betle extract. A similar inhibitory trend was observed for cell adhesion to denture acrylic and germ tube formation. In particular, A. galanga extract (2.50 mg/mL) significantly reduced C. albicans adhesion to denture acrylic by over 80%. Additionally, cinnamon bark oil, lemongrass oil, and A. galanga extract could inhibit the germination of C. albicans at 0.5×MIC. In conclusion, this study indicates that all tested agents possessed anti-C. albicans biofilm activity through decreasing adhesion and yeast-hyphae transition of C. albicans cells. Therefore, these EO and PE could serve as alternative antifungals for treating oral candidiasis.

本研究旨在评估泰国植物提取物(PEs)和精油(EOs)对白色念珠菌参考菌株和临床分离菌株的疗效,重点研究它们抑制生物膜形成、细胞粘附到义齿丙烯酸酯和胚芽管形成的能力。测定了最小生物膜抑制浓度(MBIC)和最小生物膜根除浓度(MBEC)。采用XTT法测定其对义齿丙烯酸树脂粘附力的影响,计数室法评价其对胚管的抑制作用。结果表明,肉桂皮油对两种白色念珠菌的MBIC90和MBEC90值最低,分别为0.156 mg/mL和0.313 mg/mL,其次是柠檬草油、丁香芽油、高良姜提取物和花椒提取物。细胞对义齿丙烯酸酯和胚管形成的粘附也有类似的抑制趋势。特别是A.高良姜提取物(2.50 mg/mL)显著降低白色念珠菌对义齿丙烯酸树脂的粘附80%以上。此外,肉桂皮油、柠檬草油和高良姜提取物可以抑制白色念珠菌在0.5×MIC的萌发。综上所述,本研究表明所有被测试剂均具有抗c。通过降低白色念珠菌细胞的黏附和酵母菌-菌丝转化来提高白念珠菌生物膜活性。因此,这些EO和PE可以作为治疗口腔念珠菌病的替代抗真菌药。
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引用次数: 0
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