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Ahuja A, Rastogi VK. Physicochemical and thermal characterization of the edible shellac films incorporated with oleic acid to enhance flexibility, water barrier and retard aging. Int J Biol Macromol 2024; 269:132136. [PMID: 38718999 DOI: 10.1016/j.ijbiomac.2024.132136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/24/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
In this work, shellac plasticized with oleic acid was solvent cast to prepare the flexible and water-resistant film for packaging applications. The films were prepared with varying amounts of oleic acid and studied in detail for appearance, surface morphology, thermal, chemical, barrier, mechanical, and robustness. The surface morphology confirmed the smooth surface of films up to SH-OA20 (100:20 w/w; shellac: oleic acid). Fourier-transform infrared spectroscopy confirmed that oleic acid reduced the hydrogen bonding of the shellac matrix to provide a plasticization effect. Also, the thermal analysis showed a reduction in the melting enthalpy. Moreover, the plasticized films had a better barrier to water vapor due to increased smoothness and reduction in brittleness. Adding oleic acid also increased the elongation at break up to 40 % without any changes in tensile strength. The flexibility of the films increased with the oleic acid content, making them resistant to burst, crumbling, bending, rolling, and stretching. Oleic acid also showed the retardation of aging and thermal aging of shellac. In the future, the long-term stability and migration of the films can be investigated.
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Affiliation(s)
- Arihant Ahuja
- Department of Paper Technology, Indian Institute of Technology Roorkee, Uttarakhand 247667, India
| | - Vibhore Kumar Rastogi
- Department of Paper Technology, Indian Institute of Technology Roorkee, Uttarakhand 247667, India.
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Aung WW, Krongrawa W, Limmatvapirat S, Kulpicheswanich P, Okonogi S, Limmatvapirat C. Fabrication and Optimization of Electrospun Shellac Fibers Loaded with Senna alata Leaf Extract. Polymers (Basel) 2024; 16:183. [PMID: 38256981 PMCID: PMC10819501 DOI: 10.3390/polym16020183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 12/31/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Single-fluid electrospinning creates nanofibers from molten polymer solutions with active ingredients. This study utilized a combination of a fractional factorial design and a Box-Behnken design to examine crucial factors among a multitude of parameters and to optimize the electrospinning conditions that impact fiber mats' morphology and the entrapment efficiency of Senna alata leaf extract. The findings indicated that the shellac content had the greatest impact on both fiber diameter and bead formation. The optimum electrospinning conditions were identified as a voltage of 24 kV, a solution feed rate of 0.8 mL/h, and a shellac-extract ratio of 38.5:3.8. These conditions produced nanosized fibers with a diameter of 306 nm, a low bead-to-fiber ratio of 0.29, and an extract entrapment efficiency of 96% within the fibers. The biphasic profile of the optimized nanofibers was confirmed with an in vitro release study. This profile consisted of an initial burst release of 88% within the first hour, which was succeeded by a sustained release pattern surpassing 90% for the next 12 h, as predicted with zero-order release kinetics. The optimized nanofibers demonstrated antimicrobial efficacy against diverse pathogens, suggesting promising applications in wound dressings and protective textiles.
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Affiliation(s)
- Wah Wah Aung
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (W.W.A.); (W.K.); (S.L.)
- Pharmaceutical Biopolymer Group (PBiG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Wantanwa Krongrawa
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (W.W.A.); (W.K.); (S.L.)
- Pharmaceutical Biopolymer Group (PBiG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Sontaya Limmatvapirat
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (W.W.A.); (W.K.); (S.L.)
- Pharmaceutical Biopolymer Group (PBiG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | | | - Siriporn Okonogi
- Center of Excellence in Pharmaceutical Nanotechnology, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chutima Limmatvapirat
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (W.W.A.); (W.K.); (S.L.)
- Pharmaceutical Biopolymer Group (PBiG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
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Vera-Vázquez F, Ramírez-Bribiesca JE, Cruz-Monterrosa RG, Crosby-Galvan MM, Barcena-Gama JR, Ramírez DT, Mejía-Méndez JL, Vallejo-Hernández LH, López-Mena ER. Enhancing Pectin Particles with Polymer Additives: Mitigating Rumen Degradation and Minimizing Yellowish Milk Color in Grazed Cows. Polymers (Basel) 2023; 16:106. [PMID: 38201771 PMCID: PMC10780586 DOI: 10.3390/polym16010106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/20/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
The pigments consumed in grazing give the milk from dual-purpose cows raised in tropical conditions a yellowish color, affecting the quality and price of the milk. This study aimed to develop an economical method with supplementary pectin to antagonize the availability of carotenes by designing microparticles with shellac and palm oil as a viable alternative to protect pectin degradation against rumen microbes. Three preparations of microparticles based on citrus pectin were synthesized: unprotected (PnP), protected with palm oil (PwP), and protected with palm oil and shellac (PwPL) microparticles. Samples were roughly characterized by spectroscopy and electron microscopy techniques. The effect of PnP, PwP, and PwPL on blood metabolites and physicochemical characteristics of the milk of grazing lactating cows was evaluated through in vivo assays. The release of citrus pectin from microparticles was determined as uronic acids using solutions with distinct pH, whereas its degradation was studied using in situ tests. Results revealed that PnP, PwP, and PwPL are amorphous structures with sizes that range from 60 to 265 nm or 750 to 3570 µm and have surface charges that range from -11.5 to -50.2 mV. Samples exhibited characteristic peaks during FTIR analyses that corresponded to O-H, C=O, and COOCH3 groups and bands within the UV-vis region that indicated the absorption of pectin. The EDS analysis revealed the presence of carbon, oxygen, or calcium in samples. The release of uronic acids was higher at pH 2-3 with PwPL. The in situ degradability of PnP, PwP, and PwPL was 99, 28.4, and 17.7%, respectively. Moreover, PwPL decreased the blood concentration of glucose, cholesterol, and lactate. In contrast, 100 g of pectin per animal daily during the feed process reduced yellow coloring. In conclusion, designing particles protected with lipids and polymers as shellac is an economical method that resists degradation at pH levels greater than five.
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Affiliation(s)
- Francisco Vera-Vázquez
- Programa de Ganadería, Colegio de Postgraduados, Km. 36.5, Montecillo, Texcoco 56230, Estado de México, Mexico; (F.V.-V.); (M.M.C.-G.); (J.R.B.-G.)
| | - Jacinto Efrén Ramírez-Bribiesca
- Programa de Ganadería, Colegio de Postgraduados, Km. 36.5, Montecillo, Texcoco 56230, Estado de México, Mexico; (F.V.-V.); (M.M.C.-G.); (J.R.B.-G.)
| | - Rosy G. Cruz-Monterrosa
- División de Ciencias Biológicas y de la Salud, Departamento de Ciencias de la Alimentación, Universidad Autónoma Metropolitana, Unidad Lerma, Av. Hidalgo Poniente 46, Col. La Estación, Lerma de Villada 52006, Estado de México, Mexico
| | - María M. Crosby-Galvan
- Programa de Ganadería, Colegio de Postgraduados, Km. 36.5, Montecillo, Texcoco 56230, Estado de México, Mexico; (F.V.-V.); (M.M.C.-G.); (J.R.B.-G.)
| | - José Ricardo Barcena-Gama
- Programa de Ganadería, Colegio de Postgraduados, Km. 36.5, Montecillo, Texcoco 56230, Estado de México, Mexico; (F.V.-V.); (M.M.C.-G.); (J.R.B.-G.)
| | | | - Jorge L. Mejía-Méndez
- Laboratorio en Investigación Fitoquímica, Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Ex Hacienda Sta. Catarina Mártir S/N, Puebla 72810, San Andrés Cholula, Mexico;
| | - Laura H. Vallejo-Hernández
- Departamento de Enseñanza, Investigación y Servicio en Zootecnia, Universidad Autónoma Chapingo, Km. 38.5 Carretera México—Texcoco, Chapingo, Texcoco 56230, Estado de México, Mexico;
| | - Edgar R. López-Mena
- Escuela de Ingeniería y Ciencias, Campus Guadalajara, Tecnológico de Monterrey, Av. Gral. Ramón Corona No 2514, Zapopan 45121, Colonia Nuevo México, Mexico;
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Han J, Tang M, Yang Y, Sun W, Yue Z, Zhang Y, Zhu Y, Liu X, Wang J. Amorphous solid dispersions: Stability mechanism, design strategy and key production technique of hot melt extrusion. Int J Pharm 2023; 646:123490. [PMID: 37805146 DOI: 10.1016/j.ijpharm.2023.123490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 10/09/2023]
Abstract
Solid dispersion (SD) system has been used as an effective formulation strategy to increase in vitro and in vivo performances of poorly water-soluble drugs, such as solubility/dissolution, stability and bioavailability. This review provides a comprehensive SD classification and identifies the most popular amorphous solid dispersions (ASDs). Meanwhile, this review further puts forward the systematic design strategy of satisfactory ASDs in terms of drug properties, carrier selection, preparation methods and stabilization mechanisms. In addition, hot melt extrusion (HME) as the continuous manufacturing technique is described including the principle and structure of HME instrument, key process parameters and production application, in order to guide the scale-up of ASDs and develop more ASD products to the market in pharmaceutical industry.
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Affiliation(s)
- Jiawei Han
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China; Changzhou Pharmaceutical Factory Co., LTD, Changzhou 213018, PR China; College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Mengyuan Tang
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China
| | - Yang Yang
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China
| | - Wen Sun
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China
| | - Zhimin Yue
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China
| | - Yunran Zhang
- Changzhou Pharmaceutical Factory Co., LTD, Changzhou 213018, PR China
| | - Yijun Zhu
- Changzhou Pharmaceutical Factory Co., LTD, Changzhou 213018, PR China
| | - Xiaoqian Liu
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China.
| | - Jue Wang
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China; College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
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Strich S, Azehaf H, Neut C, Lellouche-Jacob Y, Medkour N, Penning M, Karrout Y. Film Coatings Based on Aqueous Shellac Ammonium Salt "Swanlac ® ASL 10" and Inulin for Colon Targeting. AAPS PharmSciTech 2023; 24:205. [PMID: 37789211 DOI: 10.1208/s12249-023-02652-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 09/05/2023] [Indexed: 10/05/2023] Open
Abstract
Over the past decades, increasing interests took place in the realm of drug delivery systems. Beyond treating intestinal diseases such as inflammatory bowel disease, colon targeting can provide possible applications for oral administration of proteins as well as vaccines due to the lower enzymatic activity in the distal part of GIT. To date, many strategies are employed to reach the colon. This article encompasses different biomaterials tested as film coatings and highlights appropriate formulations for colonic drug delivery. A comparison of different films was made to display the most interesting drug release profiles. These films contained ethylcellulose, as a thermoplastic polymer, blended with an aqueous shellac ammonium salt solution. Different blend ratios were selected as well for thin films as for coated mini-tablets, mainly varying as follows: (80:20); (75:25); (60:40). The impact of blend ratio and coating level was examined as well as the addition of natural polysaccharide "inulin" to target the colon. In vitro drug release was measured in 0.1 M HCl for 2 h followed by phosphate buffer saline pH 6.8 to simulate gastric and intestinal fluids, respectively. Coated mini-tablets were exposed to fresh fecal samples of humans in order to simulate roughly colonic content. Several formulations were able to fully protect theophylline as a model drug up to 8 h in the upper GIT, but allowing for prolonged release kinetics in the colon. These very interesting colonic release profiles were related to the amount of the natural polysaccharide added into the system.
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Affiliation(s)
- S Strich
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000, Lille, France
| | - H Azehaf
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000, Lille, France
| | - C Neut
- Univ. Lille, Inserm, CHU Lille, U1286_INFINITE, F-59000, Lille, France
| | | | - N Medkour
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000, Lille, France
| | - M Penning
- PennConsult, Wormser Straße 28, 55276, Oppenheim, Germany
| | - Y Karrout
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000, Lille, France.
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Sánchez-Hernández E, Martín-Ramos P, Niño-Sánchez J, Diez-Hermano S, Álvarez-Taboada F, Pérez-García R, Santiago-Aliste A, Martín-Gil J, Diez-Casero JJ. Characterization of Leptoglossus occidentalis Eggs and Egg Glue. INSECTS 2023; 14:396. [PMID: 37103211 PMCID: PMC10143709 DOI: 10.3390/insects14040396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 06/19/2023]
Abstract
The western conifer seed bug (Leptoglossus occidentalis Heidemann, 1910, Heteroptera: Coreidae) has a significant economic impact due to the reduction in the quality and viability of conifer seed crops; it can feed on up to 40 different species of conifers, showing a clear predilection for Pinus pinea L. in Europe. Its incidence is especially relevant for the pine nut-producing industry, given that the action of this pest insect can reduce the production of pine nuts by up to 25%. As part of ongoing efforts aimed at the design of control strategies for this insect, this work focuses on the characterization (by scanning electron microscopy-energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, and gas chromatography-mass spectroscopy, GC-MS) of the compounds released by these insects during oviposition, with emphasis on the adhesive secretion that holds L. occidentalis eggs together. Elemental analysis pointed to the presence of significant amounts of compounds with high nitrogen content. Functional groups identified by infrared spectroscopy were compatible with the presence of chitin, scleroproteins, LNSP-like and gelatin proteins, shellac wax analogs, and policosanol. Regarding the chemical species identified by GC-MS, eggs and glue hydromethanolic extracts shared constituents such as butyl citrate, dibutyl itaconate, tributyl aconitate, oleic acid, oleamide, erucamide, and palmitic acid, while eggs also showed stearic and linoleic acid-related compounds. Knowledge of this composition may allow advances in new strategies to address the problem caused by L. occidentalis.
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Affiliation(s)
- Eva Sánchez-Hernández
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Pablo Martín-Ramos
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Jonatan Niño-Sánchez
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
| | - Sergio Diez-Hermano
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
| | - Flor Álvarez-Taboada
- School of Agrarian and Forest Engineering, DRACONES, Universidad de León, Avenida de Portugal 41, 24401 Ponferrada, Spain
| | - Rodrigo Pérez-García
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
| | - Alberto Santiago-Aliste
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Jesús Martín-Gil
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Julio Javier Diez-Casero
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
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Thombare N, Kumar S, Kumari U, Sakare P, Yogi RK, Prasad N, Sharma KK. Shellac as a multifunctional biopolymer: A review on properties, applications and future potential. Int J Biol Macromol 2022; 215:203-223. [PMID: 35718149 DOI: 10.1016/j.ijbiomac.2022.06.090] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/16/2022]
Abstract
Shellac is a physically refined form of lac resin, a natural biopolymer of animal origin obtained from tiny insects feeding on the sap of specific host trees. Shellac, in its basic form, is a polyester macromolecule composed of inter and intra esters of polyhydroxy aliphatic and sesquiterpene acids. It has been used in several industries for ages due to its exceptional properties such as film-forming, adhering, bonding, thermoplasticity, water-resistance and easy solubility in spirit and aqueous alkali solvents. From the beginning of the 21st century, due to increasing demand for natural products, a paradigm shift in the scope and applications of shellac has been witnessed, especially in green electronics, 3D printing, stealth technology, intelligent sensors, food and pharmaceutical industries. Shellac offers enormous potential for greener technologies as a natural and environmentally friendly material. This review provides an insight into the lac in detail, covering various forms of the lac, structure, properties, different applications of shellac and its future potential. This article would benefit the researchers involved in shellac research and others looking for natural and greener alternatives to synthetic polymers in various applications.
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Affiliation(s)
- Nandkishore Thombare
- ICAR - Indian Institute of Natural Resins and Gums, Ranchi 834010, Jharkhand, India.
| | - Saurav Kumar
- CSIR - Central Scientific Instruments Organisation, Chandigarh 160030, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Usha Kumari
- ICAR - Indian Institute of Natural Resins and Gums, Ranchi 834010, Jharkhand, India
| | - Priyanka Sakare
- ICAR - Indian Institute of Natural Resins and Gums, Ranchi 834010, Jharkhand, India
| | - Raj Kumar Yogi
- ICAR - Directorate of Rapeseed Mustard Research, Bharatpur 321303, Rajasthan, India
| | - Niranjan Prasad
- ICAR - Indian Institute of Natural Resins and Gums, Ranchi 834010, Jharkhand, India
| | - Kewal Krishan Sharma
- ICAR - Indian Institute of Natural Resins and Gums, Ranchi 834010, Jharkhand, India
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