Pakistan Journal of Chemistry最新文献_第2页

Production Sources and Potential Applications of Alkaline Water 碱性水的生产来源及潜在应用

Pakistan Journal of Chemistry Pub Date : 2023-05-29 DOI: 10.15228/2022.v13.i01-2.p06

S. Masood, A.U Nisa, P. Shahzad, H. Nisar, F. Sajjad, A. Hussain, H.U. Rehman, F. Khan, R. Kalsoom

引用次数: 0

Comparative kinetics studies of ribose and galactose as eco-friendly reductants for leuco dye formation 核糖和半乳糖作为环保型白色染料还原剂的比较动力学研究

Pakistan Journal of Chemistry Pub Date : 2023-05-01 DOI: 10.15228/2022.v13.i01-2.p04

M. Yamin, F. Rehman, N. Rohman, K. Ahmed

引用次数: 0

Comparative kinetics studies of ribose and galactose as eco-friendly reductants for leuco dye formation 核糖和半乳糖作为环保型白色染料还原剂的比较动力学研究

Pakistan Journal of Chemistry Pub Date : 2023-05-01 DOI: 10.15228/2023.v13.i01-2.p04

M. Yamin, F. Rehman, N. Rohman, K. Ahmed

引用次数: 0

Alteration induced in the absorption of a photon by Pb in the chloroplast center of leaves of Vigna radiata L 铅对紫穗槐叶片叶绿体中心吸收光子的影响

Pakistan Journal of Chemistry Pub Date : 2023-05-01 DOI: 10.15228/2023.v13.i01-2.p05

H. Nasreen

引用次数: 0

Cd and Cr Metals Burden in Fruits and Vegetables of Southern European Countries: A Review 南欧国家水果和蔬菜中镉、铬金属负荷的研究进展

Pakistan Journal of Chemistry Pub Date : 2023-03-15 DOI: 10.15228/2022.v13.i01-2.p03

U. Islam, F. Taqdees, R. Zahoor, F. Asad, A. Gul, H. Batool, A. Mahmood

{"title":"Cd and Cr Metals Burden in Fruits and Vegetables of Southern European Countries: A Review","authors":"U. Islam, F. Taqdees, R. Zahoor, F. Asad, A. Gul, H. Batool, A. Mahmood","doi":"10.15228/2022.v13.i01-2.p03","DOIUrl":"https://doi.org/10.15228/2022.v13.i01-2.p03","url":null,"abstract":"The Cadmium (Cd) and Chromium (Cr) burden in fruits and vegetables in Southern European countries such as Turkey, Spain, Italy, Kosovo, Croatia, Greece, and Romania are compared and analyzed in this review article to account for any significant differences. Potential sources of the metals and their health issues have been underlined. Various reasons for the extent of the metals' uptake are highlighted, including species' nature, soil pH and atmospheric conditions. In Croatia, the highest Cd burden was observed in lettuce (1.16±0.24 mg/kg), followed by carrot (0.49±0.18 mg/kg) and onion (0.28±0.08 mg/kg). The concentration of Cd in peppermint and spinach has been reported as 0.004±0.001 μg/g and 0.024±0.001 μg/g, respectively, in Turkey. Spain's strawberries, melon, and bananas have shown 0.0025 mg/kg, 0.0028 mg/kg, and 0.0005 mg/kg of Cd, respectively. The Cr level in Croatia's vegetables was less than the detection limit of the instrument. In Romania, its concentration in cabbage and potato root was 17.5 ± 0.7 mg/kg and 4.7 ± 0.3 mg/kg, respectively. Similarly, in Greece, the highest levels of Cr were found in green peas (0.21 ± 0.03 μg/g ), followed by onion (0.16 ± 0.07 μg/g) and cabbage (0 .13 ± 0.08 μg/g). The fruits and vegetables of most regions have shown a greater burden of Cd than Cr. Several strategies could be implemented to minimize the extent to which the plants take up these metals and reduce their environmental risks.","PeriodicalId":19815,"journal":{"name":"Pakistan Journal of Chemistry","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78578178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cd and Cr Metals Burden in Fruits and Vegetables of Southern European Countries: A Review 南欧国家水果和蔬菜中镉、铬金属负荷的研究进展

Pakistan Journal of Chemistry Pub Date : 2023-03-15 DOI: 10.15228/2023.v13.i01-2.p03

U. Islam, F. Taqdees, R. Zahoor, F. Asad, A. Gul, H. Batool, A. Mahmood

引用次数: 0

Constituents from Psorospermum guineense twigs, MDA-MB-231, lipoxygenase, antioxidant and Molecular Docking Studies 豚草细枝成分、MDA-MB-231、脂氧合酶、抗氧化剂及分子对接研究

Pakistan Journal of Chemistry Pub Date : 2023-02-22 DOI: 10.15228/2022.v13.i01-2.p02

K. Eyong, S. Y. Ghansenyuy, P. Yemback, L. Mehreen, G. Folefoc

{"title":"Constituents from Psorospermum guineense twigs, MDA-MB-231, lipoxygenase, antioxidant and Molecular Docking Studies","authors":"K. Eyong, S. Y. Ghansenyuy, P. Yemback, L. Mehreen, G. Folefoc","doi":"10.15228/2022.v13.i01-2.p02","DOIUrl":"https://doi.org/10.15228/2022.v13.i01-2.p02","url":null,"abstract":"Cancer is one of the leading causes of mortality worldwide, characterized by the irregular proliferation of malignant cells and increasing resistance to known drugs. The importance of developing new chemotherapeutic agents is necessary. The present study focuses on Psorospermum guineense , used in traditional medicine to treat cancer, and associated carcinogenic processes such as tumour cell proliferation, differentiation, and apoptosis. A study of the chemical constituents of the twigs of Psorospermum guineense has resulted in the isolation and characterization of eight known compounds, namely: 3-geranyloxyemodine 1 , 3-β-fridelanol 2 , 3-geranyloxyemodine anthrone 3 , 2-geranylemodine 4 , Acetylvismione D 5 , Betulinic acid 6 , Ursolic acid 7 and Emodine 8 through LC-MS and selected 1D and 2D–NMR experiments. Single crystal x-ray diffraction analysis was used to confirm the relative configuration and conformation of compound 1 . Preliminary cytotoxicity assays against the MDA-MB-231 breast cancer cell indicated that Ursolic acid 7 was the most active, with an IC 50 value of 9.88 μM and 95% CI of 9.03-10.5 μM. Acetylvismione D 5 exhibited better lipoxygenase inhibitory activity (19.8±0.16) and antioxidant activity (20.8±0.15) compared to the reference drugs baicalein (22.6  0.08 µM) and Beta hydroxyl acid (BHA) (44.2  0.07) respectively. Molecular docking studies were conducted to support lipoxygenase inhibitory activities of the test compounds.","PeriodicalId":19815,"journal":{"name":"Pakistan Journal of Chemistry","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83037702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Constituents from Psorospermum guineense twigs, MDA-MB-231, lipoxygenase, antioxidant and Molecular Docking Studies 豚草细枝成分、MDA-MB-231、脂氧合酶、抗氧化剂及分子对接研究

Pakistan Journal of Chemistry Pub Date : 2023-02-22 DOI: 10.15228/2023.v13.i01-2.p02

K.O. Eyong, S.Y. Ghansenyuy, P. Yemback, L. Mehreen, G.N. Folefoc

引用次数: 0

Alteration induced in the absorption of a photon by Pb in the chloroplast center of leaves of Vigna radiata L 铅对紫穗槐叶片叶绿体中心吸收光子的影响

Pakistan Journal of Chemistry Pub Date : 2023-02-03 DOI: 10.15228/2022.v13.i01-2.p05

H. Nasreen

{"title":"Alteration induced in the absorption of a photon by Pb in the chloroplast center of leaves of Vigna radiata L","authors":"H. Nasreen","doi":"10.15228/2022.v13.i01-2.p05","DOIUrl":"https://doi.org/10.15228/2022.v13.i01-2.p05","url":null,"abstract":"Vigna radiata L. is included in a dietary meal worldwide, especially in Asian countries, and is also a part of herbal medicine. It was selected to monitor the photon absorption under Pb metal on the chloroplasts center. The seedlings of Vigna radiata L. were cultured in nutrient solution for 15 days at several concentrations of Pb viz., 0, 50, 100, 150, and 200 ppm. Then harvested, washed, homogenized in ethanol, centrifuged and the supernatants were subjected to spectrophotometric analysis. Results showed that a hypsochromic shift in wavelength was observed under Pb stress which was discussed as an alteration in the absorption of photon wavelength of different pigments observed in the early growing stages. It was observed that the alteration in photon absorption consequently appears in photosynthetic activities, followed by the formation of the excited state of the chlorophyll and the release of energy. Moreover, the shift in wavelength in the UV region showed the synthesis of secondary metabolites. It was concluded the effects of Pb on photon absorption of chloroplast center was strongly reliant on the distribution of pigment concentrations and their absorbance with the formation of compounds that absorb radiation in UV region.","PeriodicalId":19815,"journal":{"name":"Pakistan Journal of Chemistry","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88890800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Dissolution of Ulexite in Disodium Hydrogen Phosphate 磷酸氢二钠溶出无绿石的优化研究

Pakistan Journal of Chemistry Pub Date : 2023-02-03 DOI: 10.15228/2022.v13.i01-2.p01

B. O. Kaya, S. Kuşlu, T. Çalban

引用次数: 0