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Significantly Increased Accumulations of PAHs in Scalp Hair During Smoke-haze Period Among Female Adolescents in Chiang Mai, Thailand 泰国清迈女性青少年在烟雾朦胧期头皮头发中 PAHs 的累积量显著增加
Pub Date : 2024-01-17 DOI: 10.12982/nlsc.2024.013
Kessaya Radarit, Wan Wiriya, C. Chai-Adisaksopha, S. Chantara, T. Prapamontol
Limitations in reporting polycyclic aromatic hydrocarbons (PAHs) accumulated in humans arise from the impact of intense biomass burning and air pollution in upper Southeast Asia. This study analyzed PAHs in human hair samples and explored the associations between ambient PM2.5 and hair PAH concentrations. Follow-up hair collections were conducted on 111 female students, and hair samples with a length of 4 cm were analyzed. Ten different PAHs were identified in the subjects' hair samples. The most substantial pooled estimate of cumulative effects of PM2.5 exposure was observed at lag04 (4-month average). At lag04, every 10 μg/m3 increase in PM2.5 concentration was significantly associated with 0.33, 0.29, 0.35, 0.16, 0.04, 0.64, and 1.66 ng/g hair increases in Acy, Ace, Flu, Ant, Chr, BaP, and total PAHs, respectively (P < 0.05). The findings underscore the significant contribution of ambient PM2.5 exposure to the elevation of PAHs in human hair. Specifically, each centimeter of hair represents a one-month exposure to ambient PM2.5. Moreover, the accumulation of BaP, a carcinogenic PAH, significantly increased at heightened PM2.5 levels, emphasizing the importance of hair analysis in assessing PAH exposure risks and obtaining reliable and comprehensive health risk information. Keywords: Polycyclic aromatic hydrocarbons, Hair analysis, PM2.5
由于东南亚上游地区强烈的生物质燃烧和空气污染的影响,在报告人类体内积累的多环芳烃(PAHs)方面存在局限性。本研究分析了人体毛发样本中的多环芳烃,并探讨了环境 PM2.5 与毛发多环芳烃浓度之间的关联。研究人员对 111 名女学生的头发进行了跟踪采集,并对长度为 4 厘米的头发样本进行了分析。在受试者的头发样本中发现了 10 种不同的多环芳烃。PM2.5暴露的累积效应在滞后期04(4个月平均值)的汇总估计值最大。在滞后期04,PM2.5浓度每增加10微克/立方米,毛发中的Acy、Ace、Flu、Ant、Chr、BaP和总PAHs分别会显著增加0.33、0.29、0.35、0.16、0.04、0.64和1.66纳克/克(P<0.05)。这些发现强调了环境 PM2.5 暴露对人类头发中多环芳烃含量升高的重要影响。具体来说,每厘米头发代表一个月的环境 PM2.5 暴露。此外,PM2.5水平升高时,致癌多环芳烃BaP的累积量也会显著增加,这强调了毛发分析在评估多环芳烃暴露风险和获取可靠、全面的健康风险信息方面的重要性。关键词:多环芳烃多环芳烃 毛发分析 PM2.5
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引用次数: 0
Significantly Elevated Urinary OH-PAHs and Oxidative Damage Concentrations Attributable to PM2.5 Exposure: A Panel Study of Preaging Females in Chiang Mai, Thailand 可归因于 PM2.5 暴露的尿液 OH-PAHs 和氧化损伤浓度显著升高:对泰国清迈早衰女性的小组研究
Pub Date : 2024-01-17 DOI: 10.12982/nlsc.2024.015
Pitakchon Ponsawansong, T. Prapamontol, Jaras Singkaew, Guoxing Li, Xiaochuan Pan
Exposure to ambient particulate matter with an aerodynamic diameter ≤ 2.5 µm (PM2.5) has been associated with oxidative damage. This study investigated the PM2.5-bound polycyclic aromatic hydrocarbon (PAH) exposure levels during elevated PM2.5 levels and the oxidative damage among a preaging females in Chiang Mai, Thailand. The 64 female participants, aged between 50 and 65 years old, were followed for 5 weeks consecutively during the non-haze rainy season as the baseline and haze episodes. The morning void urine sample was collected weekly and analyzed for 8 species of hydroxylated-polycyclic aromatic hydrocarbons (OH-PAHs) and malondialdehyde (MDA). The results showed that the high increase in PM2.5 levels was positively associated with OH-PAH levels. In addition, for every 1 µg/gCre increase in individual urinary OH-PAH concentrations, the MDA concentration increased from 0.073 to 2.071 µg/gCre. Therefore, the present study suggested that detected urinary OH-PAHs were attributable to PM2.5-bound PAH exposure, particularly from inhalation. These study results provide useful information for policy makers and public health agencies to mitigate the chain effects of PM2.5 exposure from haze pollution. Keywords: Air pollution, Hydroxylated-PAHs, Oxidative stress, Urinary biomarkers
暴露于空气动力学直径≤ 2.5 µm(PM2.5)的环境颗粒物与氧化损伤有关。本研究调查了泰国清迈老龄女性在 PM2.5 浓度升高时的 PM2.5 结合多环芳烃(PAH)暴露水平以及氧化损伤。64 名女性参与者的年龄在 50 岁至 65 岁之间,她们在无霾雨季和有霾期间连续接受了 5 周的基线跟踪调查。研究人员每周收集晨间排出的尿液样本,并对其中的 8 种羟基化多环芳烃(OH-PAHs)和丙二醛(MDA)进行分析。结果显示,PM2.5 水平的高增长与 OH-PAH 水平呈正相关。此外,个人尿液中的 OH-PAH 浓度每增加 1 µg/gCre,MDA 浓度就会从 0.073 µg/gCre 增加到 2.071 µg/gCre。因此,本研究表明,尿液中检测到的 OH-PAHs 可归因于 PM2.5 中的多环芳烃暴露,尤其是吸入。这些研究结果为政策制定者和公共卫生机构提供了有用的信息,以减轻雾霾污染造成的PM2.5暴露的连锁效应。关键词空气污染 羟基化多环芳烃 氧化应激 尿液生物标志物
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引用次数: 0
Design of Functional Yogurts with Microencapsulated Biologically Active Compounds 设计含有微胶囊生物活性化合物的功能性酸奶
Pub Date : 2024-01-17 DOI: 10.12982/nlsc.2024.011
Y. Tumbarski, N. Petkova, Ivan Ivanov, M. Todorova, Petya Ivanova, Lazar Nikolov, Neli Grozeva, Krastena Nikolova
The development of functional foods providing health benefits above the basic nutritional needs is of great interest to the food industry. This research aimed to: design functional yogurts with agave inulin and extracts from propolis, rose petals and Spirulina platensis; observe the physicochemical and microbiological changes during storage at 4°C for 21 days; evaluate the sensory characteristics of the new functional products. Three kinds of calcium alginate microcapsules (agave inulin + ethanolic propolis extract; agave inulin + ethanolic propolis extract + rose petals extract; agave inulin + ethanolic propolis extract + Spirulina extract) were prepared and applied in yogurts before the coagulation. During the storage, pH in all experimental groups gradually decreased (reaching values between 3.94 and 4.02 on the 21st day), which corresponded to the increasing titratable acidity (reaching values from 94.17°T to 108.78°T on the 21st day). The application of microcapsules did not affect the coagulation process and number of lactic acid bacteria in yogurts until the end of storage period. To the best of our knowledge, this is the first study to investigate the application of agave inulin, propolis, rose petals and S. platensis extracts in microencapsulated form in traditional Bulgarian yogurt in order to obtain a dairy product with enhanced functional properties. Keywords: Functional foods, Yogurt, Microencapsulation, Propolis, Rose petals, Spirulina platensis
食品工业对开发能提供基本营养需求之外的健康益处的功能性食品非常感兴趣。本研究旨在:设计含有龙舌兰菊粉和蜂胶、玫瑰花瓣和螺旋藻提取物的功能性酸奶;观察在 4°C 下储存 21 天期间的理化和微生物变化;评估新功能性产品的感官特征。制备了三种海藻酸钙微胶囊(龙舌兰菊粉+乙醇蜂胶提取物;龙舌兰菊粉+乙醇蜂胶提取物+玫瑰花瓣提取物;龙舌兰菊粉+乙醇蜂胶提取物+螺旋藻提取物),并在凝固前应用于酸奶中。在贮藏期间,所有实验组的 pH 值都逐渐下降(第 21 天达到 3.94 至 4.02 之间),这与可滴定酸度的增加(第 21 天达到 94.17°T 至 108.78°T)相对应。在贮藏期结束前,微胶囊的应用不会影响酸奶的凝固过程和乳酸菌数量。据我们所知,这是首次研究龙舌兰菊粉、蜂胶、玫瑰花瓣和板蓝根萃取物微胶囊在保加利亚传统酸奶中的应用,目的是获得功能性更强的乳制品。关键词功能食品 酸奶 微胶囊 蜂胶 玫瑰花瓣 螺旋藻
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引用次数: 0
Development and Stability Study of Oseltamivir Reconstitutable Dry Suspension from Capsules 奥司他韦胶囊可重构干混悬剂的开发和稳定性研究
Pub Date : 2024-01-16 DOI: 10.12982/nlsc.2024.010
T. Pitaksuteepong, Kitiya Kesornmalee Kesornmalee, Natthareephon Phanaphai
Oseltamivir phosphate (OSEL) is recommended for the prevention and treatment of influenza virus infection. In a hospital pharmacy, OSEL liquid extemporaneous preparation is generally compounded on a case-by-case basis from the capsules because it can be stored for a certain period. Therefore, the objective of the current research was to develop an oseltamivir reconstitutable dry suspension (ORDS), and to evaluate the stability of the ORDS. The dry-suspending vehicles were first developed and subjected to stability tests. The stable vehicle was selected to mix with the content of OSEL capsules and dry powder was termed ORDS. The stability of ORDS was then tested in both dried and reconstituted states. It was found that the dry vehicle using xanthan gum as a suspending agent (at 0.25% w/v of the reconstituted suspension) was the most stable formulation at 25°C and 45°C under 75% relative humidity (RH) for 28 days. Upon mixing with OSEL capsule contents, ORDS in the dried state showed no change in either physical or chemical properties after storing at room temperature for 7 days. For the reconstituted state, the ORDS showed no change in odor and pH after storing at 2°C to 8°C in a refrigerator, and 25°C and 45°C under 75%RH for 14 days. However, its color was slightly darker after storing at 45°C. The percentage remaining OSEL at the refrigerator temperatures was 98.13% ± 1.63%, at 25°C was 100.30% ± 0.71% and at 45°C was 97.54% ± 1.38%. In conclusion, ORDS may be a convenient alternative to extemporaneous preparations. Keywords: Oseltamivir capsule, Reconstitutable dry suspension, Extemporaneous, Physico-chemical stability, Influenza
磷酸奥司他韦(OSEL)被推荐用于预防和治疗流感病毒感染。在医院药房,OSEL 液体即用制剂一般根据具体情况由胶囊复配而成,因为它可以储存一段时间。因此,本研究的目的是开发一种奥司他韦可重组干混悬剂(ORDS),并评估 ORDS 的稳定性。首先开发了干悬浮剂,并对其进行了稳定性测试。选择稳定的载体与 OSEL 胶囊的内容物和干粉混合,称为 ORDS。然后对 ORDS 在干燥和重组状态下的稳定性进行了测试。结果发现,使用黄原胶作为悬浮剂的干燥载体(重构悬浮液的 0.25% w/v)是在 25°C 和 45°C、相对湿度(RH)为 75% 的条件下 28 天内最稳定的配方。与 OSEL 胶囊内容物混合后,干燥状态的 ORDS 在室温下存放 7 天后,其物理或化学特性均无变化。至于重组状态的 ORDS,在 2°C 至 8°C 的冰箱中以及 25°C 和 45°C 的 75%RH 条件下存放 14 天后,气味和 pH 值均无变化。不过,在 45°C 下储存后,其颜色略微变深。在冰箱温度下,OSEL 的剩余率为 98.13% ± 1.63%,在 25°C 下为 100.30% ± 0.71%,在 45°C 下为 97.54% ± 1.38%。总之,ORDS 可以方便地替代即食制剂。关键词奥司他韦胶囊 可重组干混悬剂 即用制剂 理化稳定性 流感
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引用次数: 0
Development of Mucoadhesive Buccal Films Containing Triamcinolone Acetonide by using Co-solvent Systems 利用共溶剂系统开发含有曲安奈德的粘液黏性颊黏膜
Pub Date : 2024-01-15 DOI: 10.12982/nlsc.2024.012
Benchawan Chamsai, Chutima Sinsuebpol, P. Opanasopit, W. Samprasit
This work aimed to develop mucoadhesive buccal films containing triamcinolone acetonide (TA), which shows local anti-inflammatory activity. A thin film layer was formulated from polyvinyl alcohol (PVA) by the solvent casting method. The solubility of TA and the ability of the co-solvents to produce films were evaluated. The optimal co-solvents were chosen to prepare the film. Pharmaceutical properties of the film, including uniformity of weight, thickness, mechanical property, wetting time, mucoadhesion, TA content, and release, were evaluated. Furthermore, the cytotoxicity and scratch assay were assessed for the in vitro cell line. Among the co-solvents, the system consisted of ethanol, distilled water, and an individual plasticizer (glycerin and polyethylene glycol 400 (PEG 400)), which showed promising co-solvents for TA solubility and film formation. The films were clear and colorless, with a smooth surface and good mechanical properties. PEG 400-contained film formulation had higher mechanical properties and faster wetting time than glycerin. Both films had similar mucoadhesive properties, although the TA content differed slightly, and a rapid release of TA from the films was observed. However, PEG 400-contained film offered a slightly faster TA release than glycerin. The films were non-toxic to gingival fibroblast cells. However, they decreased the cell growth and migration compared to the control. According to this research, co-solvents increased TA solubility and produced good characteristic buccal mucoadhesive films containing TA. Keywords: Triamcinolone acetonide, Co-solvents, Film, Mucoadhesive property
这项研究旨在开发含有曲安奈德丙酮(TA)的粘液粘附性口腔胶片,曲安奈德丙酮具有局部消炎活性。薄膜层由聚乙烯醇(PVA)通过溶剂浇铸法制成。对 TA 的溶解度和助溶剂制膜的能力进行了评估。选择了制备薄膜的最佳助溶剂。评估了薄膜的药用性能,包括重量均匀性、厚度、机械性能、润湿时间、粘附性、TA 含量和释放。此外,还评估了体外细胞系的细胞毒性和划痕试验。在助溶剂中,该系统由乙醇、蒸馏水和一种单独的增塑剂(甘油和聚乙二醇 400 (PEG400))组成,这三种助溶剂对 TA 的溶解性和薄膜的形成具有良好的效果。薄膜透明无色,表面光滑,机械性能良好。与甘油相比,含 PEG 400 的薄膜配方具有更高的机械性能和更快的润湿时间。两种薄膜的粘附性相似,但 TA 含量略有不同,而且观察到 TA 从薄膜中快速释放。不过,含 PEG 400 的薄膜比甘油的 TA 释放速度稍快。薄膜对牙龈成纤维细胞无毒性。不过,与对照组相比,它们降低了细胞的生长和迁移。根据这项研究,共溶剂增加了 TA 的溶解度,并产生了含有 TA 的良好特性的口腔粘膜。关键词:曲安奈德曲安奈德;助溶剂;薄膜;粘附性
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引用次数: 0
Effects of Dietary Star Apple (Chrysophyllum cainito L.) Peel Extract on Growth Performance, Intestinal Histology, Hematology, and Non-Specific Immune Parameters in Common Lowland Frog (Rana rugulosa Wiegmann) 膳食星苹果(Chrysophyllum cainito L.)果皮提取物对普通低地青蛙(Rana rugulosa Wiegmann)生长性能、肠道组织学、血液学和非特异性免疫参数的影响
Pub Date : 2024-01-12 DOI: 10.12982/nlsc.2024.009
Aroon Jankham, W. Promprom, Wannachai Chatan, Kajita Somnate, Somsak Khambaione, P. Munglue
Star apple (Chrysophyllum cainito L.) has been used to treat several diseases. However, using this plant as a feed additive in aquaculture production is rare. Therefore, this work aimed to investigate the effects of dietary star apple peel extract (SAPE) on growth performance, intestinal histology, hematology, and non-specific immune parameters in common lowland frog (Rana rugulosa Wiegmann). Peel samples from star apple fruits were collected, dried, and extracted with methanol. Alkaloids, flavonoids, phenolics, saponins, tannins, and steroids were detected in SAPE at varied concentrations. Frogs of average weight 8.50 ± 0.10 g were fed diets incorporating 0, 10, 15, and 20 g SAPE/kg diet. After six weeks of feeding, the frogs' growth and physiological parameters were evaluated. The results revealed that the growth and intestinal histology features of frogs fed SAPE diets were significantly increased compared with the control (P <0.05). No significant differences among the treatments were observed in the survival rate, red blood cells, hematocrit, and hemoglobin (P >0.05). Serum albumin was significantly enhanced in frogs fed a 10 g SAPE/kg diet (P <0.05). Dietary SAPE significantly decreased serum alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, triglyceride, and cholesterol compared with the control (P <0.05). Furthermore, frogs fed SAPE diets had significantly elevated lysozyme activity, leukocyte respiratory burst activity, complement activity, and immunoglobulin M compared with the control (P <0.05). In conclusion, these results showed the beneficial effects of SAPE on the growth and health status of frogs with the appropriate level of 17.75 to 20.00 g/kg diet. Keywords: Medicinal plants, Common lowland frog, Growth performance, Immunity, Hematology
星苹果(Chrysophyllum cainito L.)已被用于治疗多种疾病。然而,在水产养殖生产中使用这种植物作为饲料添加剂却很少见。因此,本研究旨在探讨膳食杨桃皮提取物(SAPE)对普通低地青蛙(Rana rugulosa Wiegmann)生长性能、肠道组织学、血液学和非特异性免疫参数的影响。采集杨桃果皮样本,干燥后用甲醇提取。在 SAPE 中检测到了不同浓度的生物碱、类黄酮、酚类、皂甙、单宁和类固醇。给平均体重为 8.50 ± 0.10 克的蛙饲喂含 0、10、15 和 20 克 SAPE/千克饲料的食物。饲喂六周后,对青蛙的生长和生理参数进行了评估。结果表明,与对照组相比,饲喂 SAPE 日粮的青蛙的生长和肠道组织学特征明显增加(P 0.05)。饲喂 10 克 SAPE/kg 日粮的青蛙血清白蛋白明显提高(P <0.05)。与对照组相比,饲喂 SAPE 能明显降低血清碱性磷酸酶、丙氨酸氨基转移酶、天门冬氨酸氨基转移酶、甘油三酯和胆固醇(P <0.05)。此外,与对照组相比,饲喂 SAPE 日粮的青蛙溶菌酶活性、白细胞呼吸爆发活性、补体活性和免疫球蛋白 M 显著升高(P <0.05)。总之,这些结果表明,在17.75-20.00克/千克日粮的适宜水平下,SAPE对青蛙的生长和健康状况有有益的影响。关键词药用植物 普通低地青蛙 生长性能 免疫学 血液学
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引用次数: 0
Phytochemical Compositions and Cosmeceutical Activities of Rosa damascena Mill. Leaf Extracts from Environmentally Friendly Extraction Technique 大马士革蔷薇(Rosa damascena Mill.叶提取物的植物化学成分和美容活性
Pub Date : 2024-01-05 DOI: 10.12982/nlsc.2024.008
Pipat Jittasai, Watchara Kanjanakawinkul, Artit Yawootti, W. Chaiyana
A significant amount of Rosa damascena Mill. leaves were discarded as waste during the harvesting and pruning for flowering. The current study aimed to investigate the potential of using these agricultural waste products in the cosmetics industry. Dried R. damascena leaves were extracted using maceration or environmentally friendly extractions, including infusion, digestion, ultrasonic, microwave, micellar, and pulsed electric fields (PEF) extraction. The extracts were analyzed for their chemical compositions and assessed for antioxidant, anti-tyrosinase, and anti-aging properties. The irritation profile of each extract was investigated by the hen’s egg-chorioallantoic membrane (HET-CAM) test. The results noted that extraction by ethanol yielded significantly higher extract content than deionized water (P < 0.05). However, total phenolic and flavonoid content was found to be greater, whereas the bioactive compounds, including rutin and rosmarinic acid, were only found in the aqueous extracts. On the other hand, kojic acid was found in the extract from infusion and maceration. Interestingly, the extracts from micellar and PEF extractions were found to significantly scavenge the radical, which were related to their rutin contents. Their collagenase inhibition (69.1 ± 10.1% and 54.8 ± 19.1%, respectively) were equivalent to those of epigallocatechin gallate, a well-known anti-aging compound (76.0 ± 1.2%). Besides, all extracts were safe since they induced no irritation in the HET-CAM test. In conclusion, environmentally friendly extraction of bioactive components from R. damascena leaves were suggested, with the potential to be exploited as an anti-aging and whitening ingredient for further use in cosmeceutical area. Keywords: Rosa damascene, Green extraction, Antioxidant, Anti-tyrosinase, Collagen, Elastin; Hyaluronan, Irritation
大马士革蔷薇(Rosa damascena Mill.)的大量叶子在采摘和修剪花朵时被作为废物丢弃。本研究旨在调查这些农业废弃物在化妆品行业中的应用潜力。大马士革干叶采用浸渍法或环境友好型萃取法(包括浸泡、消化、超声波、微波、胶束和脉冲电场(PEF)萃取)进行萃取。对提取物的化学成分进行了分析,并对其抗氧化、抗酪氨酸酶和抗衰老特性进行了评估。通过母鸡蛋-绒毛膜(HET-CAM)试验研究了每种提取物的刺激性。结果表明,乙醇萃取的提取物含量明显高于去离子水(P < 0.05)。不过,总酚和类黄酮的含量更高,而生物活性化合物,包括芦丁和迷迭香酸,只在水提取物中发现。另一方面,在输液和浸渍提取物中发现了曲酸。有趣的是,胶束提取物和 PEF 提取物能显著清除自由基,这与它们的芦丁含量有关。它们对胶原酶的抑制率(分别为 69.1 ± 10.1% 和 54.8 ± 19.1%)与表没食子儿茶素没食子酸酯(一种著名的抗衰老化合物)(76.0 ± 1.2%)相当。此外,所有提取物都是安全的,因为它们在 HET-CAM 试验中不会引起刺激。总之,大马士革蔷薇叶中生物活性成分的提取对环境友好,有望作为抗衰老和美白成分进一步应用于化妆品领域。关键词大马士革蔷薇 绿色萃取 抗氧化剂 抗酪氨酸酶 胶原蛋白 弹性蛋白 透明质酸刺激性
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引用次数: 0
Development of a Palm Kernel-Based Emulgel Loaded with Mitracarpus scarber Leaf Extracts for Effective Anti-Inflammatory Activity 开发出一种棕榈仁基乳胶,其中添加了疤痕棕榈叶提取物,可有效抗炎
Pub Date : 2024-01-02 DOI: 10.12982/nlsc.2024.001
Zwanden Sule Yahaya
Mitracarpus scaber is a tropical herb used in ethnomedicine for the treatment of inflammation and a variety of other diseases. The aim of this study was to develop a palm kernel-based emulgel containing Mitracarpus scarber and examine the product's physicochemical characteristics and anti-inflammatory efficacy on Wister rats. Different batches of emulgel comprising Mitracarpus scarber leaf extracts (MSE), different proportions of oils (palm kernel oil and/or liquid paraffin), and surfactants (tween-80 and/or Cremophor EL-30) were prepared. The freshly prepared and 5-month-old formulations, stored at room temperature (28 ± 2 °C), were evaluated for rheology, syneresis, and extract/excipient compatibility using Fourier transform infrared (FT-IR) spectroscopy. The spreadability, extrudability, and anti-inflammatory activity of the optimal formulation were compared with those of a commercial anti-inflammatory emulgel. Even after five months of storage, the created emulgels remained olive green and creamy, with a homogeneous texture, consistency, and glossy appearance. The optimized batch containing palm kernel oil, tween-80, and xanthan gum had the most stable characteristics, with no significant change in pH (P = 1.000) or FT-IR spectrum after 5 months of storage. It exhibited spreadability and extrudability of 12.75 cm2 and 600 g/cm2, respectively, compared to 16.82 cm2 and 400 g/cm2 for the commercial formulation. Four hours post-treatment, the anti-inflammatory effect of the optimized batch was significantly (P < 0.05) higher than that of the aqueous MSE dispersion. The obtained results demonstrate the prospects of palm kernel-based emulgel loaded with Mitracarpus scarber leaf extracts as an innovative therapeutic approach to inflammation treatment. Keywords: Inflammation, Emulgel, Mitracarpus scarber, Palm kernel oil, Formulation
Mitracarpus scarber 是一种热带草药,在民族医药中用于治疗炎症和其他多种疾病。本研究的目的是开发一种以棕榈仁为基础的含疤痕杉的润肤剂,并研究该产品的理化特性以及对威斯特大鼠的抗炎功效。我们制备了不同批次的润肤剂,其中包括三尖杉叶提取物(MSE)、不同比例的油(棕榈仁油和/或液体石蜡)以及表面活性剂(吐温-80 和/或 Cremophor EL-30)。在室温(28 ± 2 °C)下贮存的新制备配方和 5 个月的配方使用傅立叶变换红外光谱(FT-IR)对流变性、共滞性和提取物/辅料的相容性进行了评估。将最佳配方的铺展性、挤出性和消炎活性与商用消炎凝胶进行了比较。即使经过五个月的储存,所制成的润肤剂仍保持橄榄绿色和奶油状,质地均匀、稠度一致且外观光亮。含有棕榈仁油、吐温-80 和黄原胶的优化批次具有最稳定的特性,储存 5 个月后,pH 值(P = 1.000)和傅立叶变换红外光谱均无明显变化。它的铺展性和挤出性分别为 12.75 平方厘米和 600 克/平方厘米,而商业配方的铺展性和挤出性分别为 16.82 平方厘米和 400 克/平方厘米。处理后四小时,优化批次的抗炎效果明显(P < 0.05)高于 MSE 水分散体。这些结果表明,棕榈仁基的含疤痕猴面包树叶提取物的乳凝胶是一种治疗炎症的创新方法,具有广阔的应用前景。关键词炎症 润肤剂 丝楠木 棕榈仁油 配方
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引用次数: 0
Ultrasonication on Collagen Yield, Physiochemical and Structural Properties from Seabass (Lates Calcarifer) Scales as Affected by Pretreatment and Extraction Conditions 超声波处理对鲈鱼(Lates Calcarifer)鳞片胶原蛋白产量、理化性质和结构特性的影响以及预处理和提取条件
Pub Date : 2024-01-02 DOI: 10.12982/nlsc.2024.003
Sri Charan Bindu Bavisetty, S. Karnjanapratum, Jaydeep Dave, Daniel Tua Purba Purba, T. Kudre, W. Maser, N. Maiyah, Passakorn Kingwascharapong, Ali Muhammed Moula Ali
This research explored the use of ultrasound as a pretreatment and extraction assisted process for extraction of collagen from seabass scales. Both acid-soluble (AC) and pepsin-soluble collagens (PC) were extracted with ultrasonication at different extraction times (24 and 48 h). Ultrasound pretreatment (PU) and ultrasound-assisted extraction (UE) notably improved AC extraction yields over 48 hours, registering 2.12% and 4.62%, respectively. The highest yield for PC, 21.85%, was achieved with 48 hours of ultrasound assisted extraction. Protein analysis verified the extracted collagens as type I, indicated by the presence of specific α and β chains. Further, FTIR spectra confirmed collagen's presence in all samples through distinct amide band peaks. Interestingly, ultrasound processes marginally reduced AC's thermal stability while boosting PC's thermal stability, especially when combined with pepsin treatment. Moreover, CD spectroscopy showed the preserved native structure of collagen across all samples. The ultrasound method increased collagen extraction yields and retained its structural integrity. These outcomes are pivotal for advancing collagen extraction methods in the biomedical and food sectors. Keywords: Seabass scales, Collagen, Ultrasonication, Molecular characterization, Physicochemical properties
本研究探索了使用超声波作为预处理和提取辅助工艺,从鲈鱼鳞片中提取胶原蛋白。在不同的提取时间(24 小时和 48 小时)下,用超声波提取了酸溶性胶原蛋白(AC)和胃蛋白酶溶性胶原蛋白(PC)。超声预处理(PU)和超声辅助提取(UE)显著提高了 48 小时内的 AC 提取率,分别为 2.12% 和 4.62%。超声辅助提取 48 小时后,PC 的产量最高,达到 21.85%。蛋白质分析表明,提取的胶原为 I 型,具体表现为存在特定的 α 和 β 链。此外,傅立叶变换红外光谱通过明显的酰胺带峰证实了胶原蛋白存在于所有样品中。有趣的是,超声处理略微降低了 AC 的热稳定性,而提高了 PC 的热稳定性,尤其是在结合胃蛋白酶处理的情况下。此外,CD 光谱显示所有样品都保留了胶原蛋白的原生结构。超声波方法提高了胶原蛋白的提取率,并保持了其结构的完整性。这些成果对于推动生物医学和食品领域的胶原蛋白提取方法至关重要。关键词鲈鱼鳞片 胶原蛋白 超声提取 分子表征 理化特性
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引用次数: 0
Prediction of Maize Yield and Assessment of the Material Circularity of Maize Residues Used in the Dairy Cattle Feed Production 预测玉米产量和评估奶牛饲料生产中使用的玉米残渣的物质循环性
Pub Date : 2024-01-02 DOI: 10.12982/nlsc.2024.006
N. Poolsawad
The dairy cattle industry is expanding rapidly to accommodate the growing demand for human consumption. This results in high cattle feed production. This study aims to forecast the amount of maize residue and calculate the circularity level of using maize residue as a feedstock for total mixed ration feed production in dairy cattle feed production. The multiple linear regression analysis is performed to predict maize yields in Thailand so that maize residues can be calculated and used in feed production. The material circularity indicator is also used with biological cycles to assess the circularity level of dairy cattle feed production under the circular economy concept. The results show that the maize yield is expected to increase, resulting in more maize residues. The use of maize residues in daily cattle feed production gives the MCI value of 0.6038, representing a high degree of circularity and explaining the sustainable management of wastes in the cattle feed industry. Moreover, using maize residues as a part of feed ingredients instead of the Napier grass saves the cost by 14.2%. The study results provide a guideline for farmers and related authorities to plan for managing maize residue in daily cattle feed production to lower operation costs and minimize environmental problems. Keywords: Biological cycle, Circular economy, Dairy cattle feed production, Maize residues, Material circularity indicator, Multiple linear regression
为了满足人类日益增长的消费需求,奶牛业正在迅速发展。这导致奶牛饲料产量居高不下。本研究旨在预测玉米残渣的数量,并计算在奶牛饲料生产中使用玉米残渣作为全混合日粮饲料生产原料的循环水平。通过多元线性回归分析预测泰国的玉米产量,从而计算出玉米残留量并将其用于饲料生产。此外,还利用物质循环指标和生物循环来评估循环经济理念下奶牛饲料生产的循环水平。结果表明,玉米产量有望增加,从而产生更多的玉米残渣。在日常奶牛饲料生产中使用玉米残留物的 MCI 值为 0.6038,代表了较高的循环程度,说明了奶牛饲料行业废物的可持续管理。此外,用玉米秸秆代替纳皮尔草作为饲料原料的一部分,可节省 14.2% 的成本。研究结果为农民和相关部门在日常牛饲料生产中规划玉米残留物的管理提供了指导,以降低运营成本和减少环境问题。关键词生物循环 循环经济 奶牛饲料生产 玉米残留 物质循环性指标 多元线性回归
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Natural and Life Sciences Communications
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