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Ketaubon P, Prapagdee B. Enhancing cadmium phytoremediation of Chlorophytum comosum (Thunb.) Jacques by applying cadmium-resistant bacterial tablet. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:113015-113025. [PMID: 37847368 DOI: 10.1007/s11356-023-30382-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/06/2023] [Indexed: 10/18/2023]
Abstract
This study aims to formulate bacterial tablets of cadmium (Cd)-resistant Micrococcus sp. MU1, an indole-3-acetic acid-producer, for soil inoculation to improve Cd phytoremediation by Chlorophytum comosum (Thunb.) Jacques. The viability of Micrococcus sp. MU1 in tablets after storage at room temperature and 4 °C was determined. The ability of Micrococcus sp. tablets and cell suspensions on stimulating growth and Cd accumulation in C. comosum was compared. The results found that the viability of Micrococcus sp. tablets stored at room temperature and 4 °C for 2 months were 29.2 and 97.9%, respectively. After 2 months of growth in pots, the dry biomass weights of C. comosum amended with Micrococcus sp. tablet and cell suspension were greater than that of uninoculated control by 1.4- and 1.3-fold, respectively. Cd concentrations in the roots and shoots of C. comosum inoculated with bacterial tablet and bacterial suspension were not significantly different (p < 0.05) and were greater than that of the uninoculated plants. In addition, plants inoculated with Micrococcus sp. tablet and cell suspension exhibited superior phytoextraction performance, bioaccumulation factor, and translocation factor, indicating equal performance of both bacterial forms on boosting Cd phytoremediation efficiency in C. comosum. These findings suggest that soil inoculation with Micrococcus sp. tablet as a ready-to-use inoculum is a novel approach to promote phytoremediation of C. comosum in Cd-contaminated agricultural soil.
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Affiliation(s)
- Patipat Ketaubon
- Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhon Pathom, 73170, Thailand
| | - Benjaphorn Prapagdee
- Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhon Pathom, 73170, Thailand.
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Erdélyi L, Fenyvesi F, Gál B, Haimhoffer Á, Vasvári G, Budai I, Remenyik J, Bereczki I, Fehér P, Ujhelyi Z, Bácskay I, Vecsernyés M, Kovács R, Váradi J. Investigation of the Role and Effectiveness of Chitosan Coating on Probiotic Microcapsules. Polymers (Basel) 2022; 14:polym14091664. [PMID: 35566837 PMCID: PMC9101405 DOI: 10.3390/polym14091664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/12/2022] [Accepted: 04/19/2022] [Indexed: 12/14/2022] Open
Abstract
Microencapsulation and coating are preferred methods to increase the viability of the probiotic strains. The effect of microencapsulation technologies and materials used as microcapsule cores on viability is being investigated during development. In the present study, chitosan-coated and Eudragit L100-55-coated alginate microspheres were produced to encapsulate Lactobacillus plantarum probiotic bacteria. After the heat loading and simulated gastrointestinal juice dissolution study, the differences in viability were compared based on the CFU/mL values of the samples. The kinetics of the bacterial release and the ratio of the released live/dead cells of Lactobacillus plantarum were examined by flow cytometry. In all cases, we found that the CFU value for the chitosan-coated samples was virtually zero. The ratio of live/dead cells in the 120 min samples was significantly reduced to less than 20% for chitosan, while it was nearly 90% in the uncoated and Eudragit L100-55-coated samples. In the case of chitosan, based on some published MIC values and the amount of chitosan coating determined in the present study, we concluded the reason for our results. It was the first time to determine the amount of the released chitosan coat of the dried microcapsule, which reached the MIC value during the dissolution studies.
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Affiliation(s)
- Lóránd Erdélyi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, H-4032 Debrecen, Hungary
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
| | - Bernadett Gál
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
| | - Ádám Haimhoffer
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, H-4032 Debrecen, Hungary
| | - Gábor Vasvári
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
| | - István Budai
- Faculty of Engineering, University of Debrecen, Ótemető Str. 2-4, H-4028 Debrecen, Hungary;
| | - Judit Remenyik
- Institute of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
| | - Pálma Fehér
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
| | - Zoltán Ujhelyi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
| | - Renátó Kovács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary;
- Faculty of Pharmacy, University of Debrecen, H-4032 Debrecen, Hungary
| | - Judit Váradi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (L.E.); (F.F.); (B.G.); (Á.H.); (G.V.); (P.F.); (Z.U.); (I.B.); (M.V.)
- Correspondence:
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Gurram S, Jha DK, Shah DS, Kshirsagar MM, Amin PD. Insights on the Critical Parameters Affecting the Probiotic Viability During Stabilization Process and Formulation Development. AAPS PharmSciTech 2021; 22:156. [PMID: 34008083 DOI: 10.1208/s12249-021-02024-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/27/2021] [Indexed: 12/31/2022] Open
Abstract
Probiotics have gained a lot of interest in recent years as an alternative as well as adjuvant therapy for several conditions owing to their health benefits. These live microorganisms have proven efficacy for treating gut disorders, inflammation, bacterial vaginosis, hepatic and depressive disorders, and many more. There are conventional as well as non-conventional formulations available for the delivery of probiotics with the latter having fewer regulatory guidelines. The conventional formulations include the pharmaceutical formulations specifically designed to deliver an efficacious number of viable microorganisms. Studies have indicated 108-109 CFU/g as an ideal dose of probiotics for achieving health benefits, and hence, all the formulations must at least contain the said number of viable bacteria to show a therapeutic effect. The most crucial feature of probiotic formulations is that the bacteria are prone to several environmental and processing factors which all together reduce the viability of the bacteria in the final formulation. These factors include processing parameters like temperature, humidity, pressure, and storage conditions. Thus, the present review primarily focuses on the critical process parameters affecting the probiotic viability during stabilization process and formulation development. Understanding these factors prior to processing helps in delivering probiotics in the required therapeutic numbers at the target site.
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Oral Modified Release Multiple-Unit Particulate Systems: Compressed Pellets, Microparticles and Nanoparticles. Pharmaceutics 2018; 10:pharmaceutics10040176. [PMID: 30287798 PMCID: PMC6321440 DOI: 10.3390/pharmaceutics10040176] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/07/2018] [Accepted: 09/16/2018] [Indexed: 01/06/2023] Open
Abstract
Oral modified-release multiparticulate dosage forms, which are also referred to as oral multiple-unit particulate systems, are becoming increasingly popular for oral drug delivery applications. The compaction of polymer-coated multiparticulates into tablets to produce a sustained-release dosage form is preferred over hard gelatin capsules. Moreover, multiparticulate tablets are a promising solution to chronic conditions, patients’ adherence, and swallowing difficulties if incorporated into orodispersible matrices. Nonetheless, the compaction of multiparticulates often damages the functional polymer coat, which results in a rapid release of the drug substance and the subsequent loss of sustained-release properties. This review brings to the forefront key formulation variables that are likely to influence the compaction of coated multiparticulates into sustained-release tablets. It focusses on the tabletting of coated drug-loaded pellets, microparticles, and nanoparticles with a designated section on each. Furthermore, it explores the various approaches that are used to evaluate the compaction behaviour of particulate systems.
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