نتایج جستجو برای: β-CD
تعداد نتایج: 223368 فیلتر نتایج به سال:
بسیاری از آفت کش های کایرال به صورت مخلوط راسمیک به محیط وارد می شوند، علی رغم این حقیقت که فعالیت آفت کشی یک آفت کش کایرال، نتیجه واکنش پذیری بیشتر فقط یک انانتیومر است و این در حالی است که انانتیومر دیگر آن، دارای تاثیرات سمی علیه موجودات زنده غیر هدف می باشند. با توجه به این که تخریب میکروبی و مسیر های متابولیکی آفت کش های کایرال فضاگزین می باشد, کاربرد آفت کش های راسمیک معمولا به تجمع نامطل...
In order to better understand the chiral recognition mechanisms of positively charged cyclodextrin (CD) derivatives, synthesis, pKa determination by 1H nuclear magnetic resonance (NMR)-pH titration and a comparative capillary electrophoretic (CE) study were performed with two series mono-substituted cationic single isomer CDs. The first selectors mono-(6-N-pyrrolidine-6-deoxy)-β-CD (PYR-β-CD), ...
Cinnamomum longepaniculatum essential oil (CLEO) possesses antibacterial, anti-inflammatory, and antioxidant activities. However, CLEO shows volatilization poor solubility, which limits its application field. In this research, inclusion complexes of β-cyclodextrin (β-CD) with were produced, physicochemical properties characterized. Response surface methodology was used to obtain optimum prepara...
Natural kaolinite was subjected to a successful exfoliation process into separated nanosheets (KNs), followed by hybridization with β-cyclodextrin biopolymer (β-CD), forming an advanced bio-nanocomposite (β-CD/KNs). The synthetic products were evaluated as enhanced delivery structures for oxaliplatin chemotherapy (OXAPN). of KNs β-CD polymer notably the loading capacity 355.3 mg/g (β-CD/KNs) co...
Thermodynamic study on the interaction of β-CD with poly ethylene oxide and poly acrylic acid was performed by isothermal titration calorimetry at 298K. when β-CD is added to the interpolymer complex, competition is created between host-guest and Hydrogen bond. Enthalpy of interaction between the β-CD and interpolymer complex was calculated using the extended solvation theory. P=1 Shows that w...
thermodynamic study on the interaction of β-cd with poly ethylene oxide and poly acrylic acid was performed by isothermal titration calorimetry at 298k. when β-cd is added to the interpolymer complex, competition is created between host-guest and hydrogen bond. enthalpy of interaction between the β-cd and interpolymer complex was calculated using the extended solvation theory. p=1 shows that wi...
Objective(s): The aim of this work was to investigate the effect of the natural and the chemically modified form of cyclodextrins namely; β-cyclodextrin (β-CD) and hydroxypropyl-β-cyclodextrin (HP-β-CD) respectively on the solubility and dissolution rate of aripiprazole; an antipsychotic medication showing poor aqueous solubility. Materials and Methods: Phase solubility of ar...
The solubility of trihexyphenidyl (Thp) was improved by its combination with β-cyclodextrin (β-CD) and modified β-CDs. The solubility of Thp was found to be increased in the presence of β-CD, hydroxypropyl-β-cyclodextrin (HP-β-CD), methyl-β-cyclodextrin (Me-β-CD) and sulfobutylether-β-cyclodextrin (SBE-β-CD). In particular, the solubility of Thp in conjunction with SBE-β-CD was increased by a f...
Sonochemical procedure was used to synthesize Co/β-cyclodextrin complex. For the first time, Fe/β-cyclodextrin complex also synthesized in alkaline media. Moreover, β-cyclodextrin modified by citric acid (CA) and reacted with metal salts under ultrasonic irradiation. The prepared catalysts were characterized using EDX, UV–vis FTIR analytical techniques. highest incorporation of into observed cr...
Cinnamaldehyde (CA) was successfully encapsulated in β-cyclodextrin (β-CD), and polylactic acid (PLA)-based composite fibers were prepared by incorporating CA/β-CD via electrospinning. Morphological, structural, spectral, and antibacterial properties of different weight ratios of PLA:β-CD/CA (88:12, 94:6, 97:3, and 98.5:1.5) and PLA/CA/β-CD fibers were investigated. PLA and CA/β-CD were incorpo...
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