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Article ; Online: Application of combined Box-Behnken design with response surface methodology and desirability function in optimizing pectin extraction from fruit peels.

Haque, Sk Manirul

Journal of the science of food and agriculture

2023 Volume 104, Issue 1, Page(s) 149–173

Abstract: Background: This study aimed to extract pectin from various fruit peels, namely apple, orange, green citron, and pomegranate, and to evaluate the effects of various experimental conditions. The extraction was conducted at temperatures of 50-90 °C, with ... ...

Abstract	Background: This study aimed to extract pectin from various fruit peels, namely apple, orange, green citron, and pomegranate, and to evaluate the effects of various experimental conditions. The extraction was conducted at temperatures of 50-90 °C, with a solid-liquid ratio of 0.03-0.08 g/mL, for 120-180 min. The Box-Behnken design was applied in a three-level and four-factor factorial approach, including 29 experiments for each extraction, with varying conditions. The interaction effects were investigated. Each experiment's conditions were optimized. Results: The percentage yield varied (11.70-37.37%). The maximum yield was found in apples, whereas the lowest was in pomegranates. Conclusion: Under optimized experimental conditions,high-quality pectin was extracted from pomegranate, orange, green citron, and apple peel waste. The extract was considered to be high methyl ester pectin with a degree of esterification greater than 50% and with an Anhydrouronic acid (AUA) content greater than 65%. The peel pectin that was studied could therefore be a food additive with numerous uses. The procedure developed here reuses waste resources effectively and contributes to a novel concept for exploring natural assets for use in food and pharmaceutical applications. © 2023 Society of Chemical Industry.
MeSH term(s)	Pectins/chemistry ; Fruit/chemistry ; Food Additives/analysis ; Malus ; Citrus/chemistry
Chemical Substances	Pectins (89NA02M4RX) ; Food Additives
Language	English
Publishing date	2023-09-01
Publishing country	England
Document type	Journal Article
ZDB-ID	184116-6
ISSN	1097-0010 ; 0022-5142
ISSN (online)	1097-0010
ISSN	0022-5142
DOI	10.1002/jsfa.12925
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Article ; Online: Application of combined Box–Behnken design with response surface methodology and desirability function in optimizing pectin extraction from fruit peels

Haque, SK Manirul

Journal of the Science of Food and Agriculture. 2024 Jan. 15, v. 104, no. 1, p. 149-173

2024 , Page(s) 149–173

Abstract: BACKGROUND: This study aimed to extract pectin from various fruit peels, namely apple, orange, green citron, and pomegranate, and to evaluate the effects of various experimental conditions. The extraction was conducted at temperatures of 50–90 °C, with a ...

Abstract	BACKGROUND: This study aimed to extract pectin from various fruit peels, namely apple, orange, green citron, and pomegranate, and to evaluate the effects of various experimental conditions. The extraction was conducted at temperatures of 50–90 °C, with a solid‐liquid ratio of 0.03–0.08 g/mL, for 120–180 min. The Box–Behnken design was applied in a three‐level and four‐factor factorial approach, including 29 experiments for each extraction, with varying conditions. The interaction effects were investigated. Each experiment's conditions were optimized. RESULTS: The percentage yield varied (11.70–37.37%). The maximum yield was found in apples, whereas the lowest was in pomegranates. CONCLUSION: Under optimized experimental conditions,high‐quality pectin was extracted from pomegranate, orange, green citron, and apple peel waste. The extract was considered to be high methyl ester pectin with a degree of esterification greater than 50% and with an Anhydrouronic acid (AUA) content greater than 65%. The peel pectin that was studied could therefore be a food additive with numerous uses. The procedure developed here reuses waste resources effectively and contributes to a novel concept for exploring natural assets for use in food and pharmaceutical applications. © 2023 Society of Chemical Industry.
Keywords	Citrus medica ; agriculture ; apple peels ; apples ; esterification ; experimental design ; food additives ; fruits ; pectins ; pomegranates ; response surface methodology ; wastes
Language	English
Dates of publication	2024-0115
Size	p. 149-173
Publishing place	John Wiley & Sons, Ltd.
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	184116-6
ISSN	1097-0010 ; 0022-5142
ISSN (online)	1097-0010
ISSN	0022-5142
DOI	10.1002/jsfa.12925
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Optimized Box-Behnken experimental design based response surface methodology and Youden's robustness test to develop and validate methods to determine nateglinide using kinetic spectrophotometry.

Haque, Sk Manirul

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

2021 Volume 268, Page(s) 120712

Abstract: Selective and straightforward kinetic spectrophotometric methods were developed to quantify nateglinide (NTG) in pharmaceutical dosage forms. Fixed time (ΔA) and the equilibrium methods utilized the reaction of NTG with 1-chloro-2,4-dinitrobenzene (CDNB) ...

Abstract	Selective and straightforward kinetic spectrophotometric methods were developed to quantify nateglinide (NTG) in pharmaceutical dosage forms. Fixed time (ΔA) and the equilibrium methods utilized the reaction of NTG with 1-chloro-2,4-dinitrobenzene (CDNB) in dimethyl sulfoxide (DMSO) with heating at 80 °C for 25 min to form a stable yellow-coloured Meisenheimer complex, which absorbs maximally at 421 nm. The optimization was achieved by utilizing the Box-Behnken experimental design (BBD) combined with response surface methodology (RSM). In which three significant factors were studied, namely, CDNB volume (A), heating temperature (B) and heating time (C) against the absorbance as a response. Method validation presented the International Conference on Harmonisation (ICH) parameters such as specificity, selectivity, linearity, precision, accuracy, limit of detection (LOD), limit of quantitation (LOQ), robustness and solution stability. The LOD and LOQ values were 0.48, 1.46, and 0.21, 0.62 µg/ml, respectively, for a fixed time (ΔA) and equilibrium methods with the linear dynamic range of 1-15 µg/ml. Furthermore, Youden's robustness test using factorial combinations of the selected analytical parameters was performed and investigated its influence with alternative conditions. All results were reproducible and quickly adopted for routine analysis of NTG in pharmaceutical formulations and laboratory preparations.
MeSH term(s)	Drug Compounding ; Kinetics ; Nateglinide ; Research Design ; Spectrophotometry
Chemical Substances	Nateglinide (41X3PWK4O2)
Language	English
Publishing date	2021-12-04
Publishing country	England
Document type	Journal Article
ZDB-ID	210413-1
ISSN	1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
ISSN (online)	1873-3557
ISSN	0370-8322 ; 0584-8539 ; 1386-1425
DOI	10.1016/j.saa.2021.120712
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Article ; Online: Development and Validation of Chromatographic and Spectrophotometric Methods for the Quantitation of Rufinamide in Pharmaceutical Preparations.

Rahman, Habibur / Haque, Sk Manirul

Turkish journal of pharmaceutical sciences

2022 Volume 19, Issue 3, Page(s) 267–272

Abstract: Objectives: Two optimized and validated high performance liquid chromatography (HPLC) and spectrophotometric methods are proposed. The developed methods were quantified with high sensitivity, accuracy, and precision at low concentrations to determine ... ...

Abstract	Objectives: Two optimized and validated high performance liquid chromatography (HPLC) and spectrophotometric methods are proposed. The developed methods were quantified with high sensitivity, accuracy, and precision at low concentrations to determine rufinamide (RUF) in active pharmaceutical ingredients (API) and pharmaceutical preparations. Materials and methods: HPLC method was developed using a base deactivated silica Hypersil C Results: Different analytical validation parameters, including specificity, linearity, accuracy, precision, the limit of detection, quantification, ruggedness, and robustness, were determined as per International Conference on Harmonization guidelines. The linearity range of RUF was 0.15-3.5 and 10-100 μg/mL for HPLC and spectrophotometric methods, respectively. Conclusion: The proposed investigations were valuable for drug monitoring and regular analysis of RUF in quality control and research laboratories. Moreover, the accuracy and precision obtained with the UV-visible spectrophotometer implied that it could be a cheap, easy, and alternative method, while HPLC could be sensitive to determine RUF at low concentration levels.
Language	English
Publishing date	2022-06-30
Publishing country	Turkey
Document type	Journal Article
ZDB-ID	2238484-4
ISSN	2148-6247 ; 2148-6247
ISSN (online)	2148-6247
ISSN	2148-6247
DOI	10.4274/tjps.galenos.2021.37043
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Antiviral polymeric materials as potential inhibitors against SARS-CoV-2

HAQUE, SK MANIRUL

2020

Abstract: we want to draw, please remove ... ...

Abstract	we want to draw, please remove it
Keywords	covid19
Publisher	Center for Open Science
Publishing country	us
Document type	Book ; Online
DOI	10.31219/osf.io/bf2uc
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Response surface methodology combined Box-Behnken design optimized green kinetic spectrophotometric and HPLC methods to quantify angiotensin receptor blocker valsartan in pharmaceutical formulations.

Haque, Sk Manirul / Kabir, Abuzar / Rahman, Nafisur / Azmi, Syed Najmul Hejaz

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

2023 Volume 298, Page(s) 122805

Abstract: The high-performance liquid chromatographic (HPLC) and kinetic spectrophotometric methods were established to compute valsartan (VAL) in pharmaceutical formulations. The spectrophotometric procedures adopted initial rate, fixed time, and equilibrium ... ...

Abstract	The high-performance liquid chromatographic (HPLC) and kinetic spectrophotometric methods were established to compute valsartan (VAL) in pharmaceutical formulations. The spectrophotometric procedures adopted initial rate, fixed time, and equilibrium strategies to assess VAL. The method was based on the carboxylic acid group of the oxidized VAL with a mixture of potassium iodate (KIO
MeSH term(s)	Valsartan ; Chromatography, High Pressure Liquid/methods ; Drug Compounding ; Spectrophotometry ; Potassium Iodide
Chemical Substances	Valsartan (80M03YXJ7I) ; Potassium Iodide (1C4QK22F9J)
Language	English
Publishing date	2023-05-03
Publishing country	England
Document type	Journal Article
ZDB-ID	210413-1
ISSN	1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
ISSN (online)	1873-3557
ISSN	0370-8322 ; 0584-8539 ; 1386-1425
DOI	10.1016/j.saa.2023.122805
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Article: V483A: an emerging mutation hotspot of SARS-CoV-2.

Ashwaq, Omar / Manickavasagam, Pratibha / Haque, Sk Manirul

Future virology

2021

Abstract: One of the many mutations that have occurred in the viral genome is the V483A mutation, which is a part of the receptor-binding motif present in the S1 domain of the spike protein. V483A mutant virus is popular in North America with 36 cases so far and ... ...

Abstract	One of the many mutations that have occurred in the viral genome is the V483A mutation, which is a part of the receptor-binding motif present in the S1 domain of the spike protein. V483A mutant virus is popular in North America with 36 cases so far and frequently occurring in recent days. This review compares the wild-type and the V483A mutants to analyze certain factors like the interaction between the virus and host-cell interface, binding affinity, stability, partition energy, hydrophobicity, occurrence rate and transmissibility. This information can be of monumental importance in vaccine and drug development since the mutants can become resistant to the vaccines and monoclonal antibodies.
Language	English
Publishing date	2021-06-14
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	2254606-6
ISSN	1746-0808 ; 1746-0794
ISSN (online)	1746-0808
ISSN	1746-0794
DOI	10.2217/fvl-2020-0384
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: AgNPs Embedded in Porous Polymeric Framework

Bipasha Banerjee / Pekham Chakrabortty / Najirul Haque / Swarbhanu Ghosh / Mitali Sarkar / Aslam Khan / Sk. Manirul Islam

Catalysts, Vol 13, Iss 12, p

A Reusable Catalytic System for the Synthesis of α-Alkylidene Cyclic Carbonates and Oxazolidinones via Chemical Fixation of CO 2

2023 Volume 1467

Abstract: Porous polymeric frameworks have received great interest over the past few years because of their nonstop growth as crystalline porous polymeric materials connected through covalent bonds and versatile utilities in diverse fields. The production of high- ... ...

Abstract	Porous polymeric frameworks have received great interest over the past few years because of their nonstop growth as crystalline porous polymeric materials connected through covalent bonds and versatile utilities in diverse fields. The production of high-value organic compounds via sustainable and environment-friendly methods is an uphill struggle for researchers. The elegant strategy of using carbon dioxide as a C1 building block is an intriguing platform owing to its non-toxicity, easy accessibility, natural abundance, recyclability, non-flammability, and cheapness. Additionally, CO 2 levels are regarded as the main contributor to the greenhouse effect (the most abundant greenhouse gas across the globe) and the aforementioned strategy needs to mitigate CO 2 emissions. This present study describes the synthesis of silver nanoparticles (AgNPs) embedded in a porous polymeric framework, a reusable heterogeneous catalyst (recyclable over 5 times), TpMA (MC)@Ag. The synthesized catalyst is characterized by using FT-IR, PXRD, XPS, FE-SEM, TEM, EDAX, TGA DTA, and N 2 sorption studies. Additionally, the catalysts can be easily recycled to generate the desired α-alkylidene cyclic carbonates and oxazolidinone compounds under solvent-free conditions. This research demonstrates the potential of nanoporous 2D porous polymeric framework-based materials in the area of catalysis, specially, in CO 2 capture and chemical fixation. These findings offer a promising approach for the chemical fixation of CO 2 into α-alkylidene cyclic carbonates and oxazolidinones from propargylic alcohols utilizing AgNPs embedded in a 2D catalyst, which functions as a potential heterogeneous catalyst under mild conditions (e.g., solvent-free approach).
Keywords	CO 2 fixation ; heterogeneous catalyst ; oxazolidinones ; cyclic carbonates ; Ag nanoparticle ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
Subject code	540
Language	English
Publishing date	2023-11-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Innovative economic anthocyanin dye source for enhancing the performance of dye-sensitized solar cell

Sirhan Al Batty / Sama M. Al-Jubouri / Mohammed Wali Hakami / Abdulla Sarief / SK Manirul Haque

Journal of Taibah University for Science, Vol 16, Iss 1, Pp 415-

2022 Volume 422

Abstract: Four natural dyes were extracted from different fruits used in the Dye-sensitized solar cell (DSSC). It includes ber, blackberry, black grapes, and blueberry by individual dye or combined with other dyes. The dye solution's absorption spectra were ... ...

Abstract	Four natural dyes were extracted from different fruits used in the Dye-sensitized solar cell (DSSC). It includes ber, blackberry, black grapes, and blueberry by individual dye or combined with other dyes. The dye solution's absorption spectra were extended to the whole visible region 200–750 nm. FTIR spectroscopy was employed to identify the possible functional group vibrations responsible for the dyes' chemical activity and optical behaviour. The TiO2 powder was coated on the ITO conducting surface to form a thin film. The experimental results showed that the ber dye produces the highest solar cell efficiency (η), ˜13%, among all four extracted anthocyanin studied. It also found that ber combination with other dyes is higher conversion efficiency than blackberry, black grapes, and blueberry with another and vice versa. Ber dye can be helpful in the development of more eco-friendly and cost-effective solar cells with commercially promising DSSC.
Keywords	DSSC ; natural dyes ; ber ; anthocyanin ; current–voltage ; solar cell efficiency ; Science (General) ; Q1-390
Language	English
Publishing date	2022-12-01T00:00:00Z
Publisher	Taylor & Francis Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Innovative economic anthocyanin dye source for enhancing the performance of dye-sensitized solar cell

Al Batty, Sirhan / Al-Jubouri, Sama M. / Wali Hakami, Mohammed / Sarief, Abdulla / Haque, SK Manirul

Journal of Taibah University for Science. 2022 Dec. 31, v. 16, no. 1 p.415-422

2022

Abstract	Four natural dyes were extracted from different fruits used in the Dye-sensitized solar cell (DSSC). It includes ber, blackberry, black grapes, and blueberry by individual dye or combined with other dyes. The dye solution's absorption spectra were extended to the whole visible region 200–750 nm. FTIR spectroscopy was employed to identify the possible functional group vibrations responsible for the dyes' chemical activity and optical behaviour. The TiO₂ powder was coated on the ITO conducting surface to form a thin film. The experimental results showed that the ber dye produces the highest solar cell efficiency (η), ˜13%, among all four extracted anthocyanin studied. It also found that ber combination with other dyes is higher conversion efficiency than blackberry, black grapes, and blueberry with another and vice versa. Ber dye can be helpful in the development of more eco-friendly and cost-effective solar cells with commercially promising DSSC.
Keywords	Fourier transform infrared spectroscopy ; absorption ; anthocyanins ; blackberries ; blueberries ; cost effectiveness ; dyes ; films (materials) ; solar cells ; DSSC ; natural dyes ; ber ; anthocyanin ; current–voltage ; solar cell efficiency
Language	English
Dates of publication	2022-1231
Size	p. 415-422.
Publishing place	Taylor & Francis
Document type	Article ; Online
ZDB-ID	2834710-9
ISSN	1658-3655
ISSN	1658-3655
DOI	10.1080/16583655.2022.2070367
Database	NAL-Catalogue (AGRICOLA)

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