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Barbălată-Mândru M, Serbezeanu D, Butnaru M, Rîmbu CM, Enache AA, Aflori M. Poly(vinyl alcohol)/Plant Extracts Films: Preparation, Surface Characterization and Antibacterial Studies against Gram Positive and Gram Negative Bacteria. MATERIALS 2022; 15:ma15072493. [PMID: 35407829 PMCID: PMC9000143 DOI: 10.3390/ma15072493] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/09/2022] [Accepted: 03/23/2022] [Indexed: 11/23/2022]
Abstract
In this study, we aim to obtain biomaterials with antibacterial properties by combining poly(vinyl alcohol) with the extracts obtained from various selected plants from Romania. Natural herbal extracts of freshly picked flowers of the lavender plant (Lavandula angustifolia) and leaves of the peppermint plant (Mentha piperita), hemp plant (Cannabis sativa L.), verbena plant (Verbena officinalis) and sage plant (Salvia officinalis folium) were selected after an intensive analyzing of diverse medicinal plants often used as antibacterial and healing agents from the country flora. The plant extracts were characterized by different methods such as totals of phenols and flavonoids content and UV-is spectroscopy. The highest amounts of the total phenolic and flavonoid contents, respectively, were recorded for Salvia officinalis. Moreover, the obtained films of poly(vinyl alcohol) (PVA) loaded with plant extracts were studied concerning the surface properties and their antibacterial or cytotoxicity activity. The Attenuated Total Reflection Fourier Transform Infrared analysis described the successfully incorporation of each plant extract in the poly(vinyl alcohol) matrix, while the profilometry demonstrated the enhanced surface properties. The results showed that the plant extracts conferred significant antibacterial effects to films toward Staphylococcus aureus and Escherichia coli and are not toxic against fibroblastic cells from the rabbit.
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Affiliation(s)
- Mihaela Barbălată-Mândru
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Gr. GhicaVoda, 700487 Iasi, Romania; (M.B.-M.); (M.B.)
| | - Diana Serbezeanu
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Gr. GhicaVoda, 700487 Iasi, Romania; (M.B.-M.); (M.B.)
- Correspondence: (D.S.); (M.A.)
| | - Maria Butnaru
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Gr. GhicaVoda, 700487 Iasi, Romania; (M.B.-M.); (M.B.)
- Department of Biomedical Sciences, “Grigore T. Popa” University of Medicine and Pharmacy, 9-13, Kogalniceanu Street, 700115 Iasi, Romania
| | - Cristina Mihaela Rîmbu
- Department of Public Health, Faculty of Veterinary Medicine, Iasi University of Life Sciences (IULS), Mihail Sadoveanu Alley no. 8, 700490 Iasi, Romania;
| | | | - Magdalena Aflori
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Gr. GhicaVoda, 700487 Iasi, Romania; (M.B.-M.); (M.B.)
- Correspondence: (D.S.); (M.A.)
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Kim ES, Choi W, Park SH. The thickening and modification of the galactan-enriched layer during primary phloem fibre development in Cannabis sativa. AOB PLANTS 2021; 13:plab044. [PMID: 34394905 PMCID: PMC8356173 DOI: 10.1093/aobpla/plab044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Primary phloem fibres (PPFs) have higher fibre quality and are economically more important for the textile sector than secondary phloem fibres. Both the chemical composition and mechanical structure of the secondary cell wall mainly influence the quality of bast fibres. We investigated the thickening of the galactan-enriched (Gn) layer and its modification process into a gelatinous (G)-layer, which is the largest portion of the secondary cell wall, during the development of the PPF in Cannabis sativa. Stem segments of hemp collected at 17, 29, 52 and 62 days after sowing were comparatively examined using light microscopy, scanning electron microscopy and transmission electron microscopy. The initial cells of PPF started the proliferation and differentiation at 17 days, but the secondary cell wall thickening had already commenced before the 29 days. Both the G- and Gn-layer were rapidly added onto the S-layer of PPFs; thus, the secondary cell wall thickness increased approximately 2-fold at 52 days (from the 29-day mark), and 8-fold at 62 days. The cortical microtubule arrays appeared adjacent to the plasma membrane of PPF cells related to the cellulose synthesis. Additionally, cross-sectioned microfibrils were observed on Gn-layer as the cluster of tiny spots. At 62 days, the specific stratification structure consisting of several lamellae occurred on the G-layer of the secondary cell wall. The secondary cell wall thickened remarkably at 52 days through 62 days so that the mature secondary cell wall consisted of three distinctive layers, the S-, G- and Gn-layer. Cortical microtubule arrays frequently appeared adjacent to the plasma membrane together with cellulose microfibrils on secondary cell wall. The G-layer of PPF at 62 days exhibited the characteristic stratification structure, which demonstrates the modification of the Gn-layer into the G-layer.
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Affiliation(s)
- Eun-Soo Kim
- Institute of Cannabis Research, Colorado State University-Pueblo, Pueblo, CO 81001-4901, USA
| | - Wonkyun Choi
- Division of Ecological Safety, National Institute of Ecology, Seocheon 33657, South Korea
| | - Sang-Hyuck Park
- Institute of Cannabis Research, Colorado State University-Pueblo, Pueblo, CO 81001-4901, USA
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Lashermes G, Bleuze L, Recous S, Voinot R, Lafolie F, Chabbert B. Multiscale modeling of microbial degradation of outer tissues of fiber-crop stems during the dew retting process. BIORESOURCE TECHNOLOGY 2020; 311:123558. [PMID: 32485603 DOI: 10.1016/j.biortech.2020.123558] [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: 02/06/2020] [Revised: 05/15/2020] [Accepted: 05/16/2020] [Indexed: 06/11/2023]
Abstract
Dew retting of fiber crops, such as hemp or flax, in the field after harvest promotes the microbial biodegradation of the tissues surrounding cellulosic fibers, which helps preserve the quality of fibers during their extraction and valorization for industry. This bioprocess is currently the bottleneck for plant fiber valorization because it is empirically managed and its controlling factors have not been properly quantified. A novel multiscale model representing tissue and polymer biodegradation was developed to simulate microbial growth on the stem during retting. The model was evaluated against experimental hemp retting data. It consistently simulated the mass loss of eight plant polymers belonging to two tissues of the stem outer layer, i.e., parenchyma and fiber bundles. Microbial growth was modeled by Monod equations and modulated by the functions of temperature and moisture. This work provides a tool for gaining more insights into microorganism behavior during retting under local climate conditions.
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Affiliation(s)
| | - Laurent Bleuze
- Université de Reims Champagne Ardenne, INRAE, FARE, 51100 Reims, France
| | - Sylvie Recous
- Université de Reims Champagne Ardenne, INRAE, FARE, 51100 Reims, France
| | - Richard Voinot
- Université de Reims Champagne Ardenne, INRAE, FARE, 51100 Reims, France
| | - François Lafolie
- Université d'Avignon et des pays de Vaucluse, INRAE, EMMAH, 84000 Avignon, France
| | - Brigitte Chabbert
- Université de Reims Champagne Ardenne, INRAE, FARE, 51100 Reims, France
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Goudenhooft C, Bourmaud A, Baley C. Flax ( Linum usitatissimum L.) Fibers for Composite Reinforcement: Exploring the Link Between Plant Growth, Cell Walls Development, and Fiber Properties. FRONTIERS IN PLANT SCIENCE 2019; 10:411. [PMID: 31001310 PMCID: PMC6456768 DOI: 10.3389/fpls.2019.00411] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 03/19/2019] [Indexed: 05/13/2023]
Abstract
Due to the combination of high mechanical performances and plant-based origin, flax fibers are interesting reinforcement for environmentally friendly composite materials. An increasing amount of research articles and reviews focuses on the processing and properties of flax-based products, without taking into account the original key role of flax fibers, namely, reinforcement elements of the flax stem (Linum usitatissimum L.). The ontogeny of the plant, scattering of fiber properties along the plant, or the plant growth conditions are rarely considered. Conversely, exploring the development of flax fibers and parameters influencing the plant mechanical properties (at the whole plant or fiber scale) could be an interesting way to control and/or optimize fiber performances, and to a greater extent, flax fiber-based products. The first part of the present review synthesized the general knowledge about the growth stages of flax plants and the internal organization of the stem biological tissues. Additionally, key findings regarding the development of its fibers, from elongation to thickening, are reviewed to offer a piece of explanation of the uncommon morphological properties of flax fibers. Then, the slenderness of flax is illustrated by comparison of data given in scientific research on herbaceous plants and woody ones. In the second section, a state of the art of the varietal selection of several main industrial crops is given. This section includes the different selection criteria as well as an overview of their impact on plant characteristics. A particular interest is given to the lodging resistance and the understanding of this undesired phenomenon. The third section reviews the influence of the cultural conditions, including seedling rate and its relation with the wind in a plant canopy, as well as the impact of main tropisms (namely, thigmotropism, seismotropism, and gravitropism) on the stem and fiber characteristics. This section illustrates the mechanisms of plant adaptation, and how the environment can modify the plant biomechanical properties. Finally, this review asks botanists, breeders, and farmers' knowledge toward the selection of potential flax varieties dedicated to composite applications, through optimized fiber performances. All along the paper, both fibers morphology and mechanical properties are discussed, in constant link with their use for composite materials reinforcement.
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Affiliation(s)
| | - Alain Bourmaud
- IRDL, UMR CNRS 6027, Université de Bretagne Sud, Lorient, France
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Behr M, Lutts S, Hausman JF, Guerriero G. Jasmonic acid to boost secondary growth in hemp hypocotyl. PLANTA 2018; 248:1029-1036. [PMID: 29968063 DOI: 10.1007/s00425-018-2951-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/27/2018] [Indexed: 05/21/2023]
Abstract
The application of jasmonic acid results in an increased secondary growth, as well as additional secondary phloem fibres and higher lignin content in the hypocotyl of textile hemp (Cannabis sativa L.). Secondary growth provides most of the wood in lignocellulosic biomass. Textile hemp (Cannabis sativa L.) is cultivated for its phloem fibres, whose secondary cell wall is rich in crystalline cellulose with a limited amount of lignin. Mature hemp stems and older hypocotyls are characterised by large blocks of secondary phloem fibres which originate from the cambium. This study aims at investigating the role of exogenously applied jasmonic acid on the differentiation of secondary phloem fibres. We show indeed that the exogenous application of this plant growth regulator on young hemp plantlets promotes secondary growth, differentiation of secondary phloem fibres, expression of lignin-related genes, and lignification of the hypocotyl. This work paves the way to future investigations focusing on the molecular network underlying phloem fibre development.
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Affiliation(s)
- Marc Behr
- Environmental Research and Innovation Department, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, 4362, Esch/Alzette, Luxembourg
- Groupe de Recherche en Physiologie Végétale, Université catholique de Louvain, 5, Place Croix du Sud, 1348, Louvain-la-Neuve, Belgium
| | - Stanley Lutts
- Groupe de Recherche en Physiologie Végétale, Université catholique de Louvain, 5, Place Croix du Sud, 1348, Louvain-la-Neuve, Belgium
| | - Jean-Francois Hausman
- Environmental Research and Innovation Department, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, 4362, Esch/Alzette, Luxembourg
| | - Gea Guerriero
- Environmental Research and Innovation Department, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, 4362, Esch/Alzette, Luxembourg.
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Kiyoto S, Yoshinaga A, Fernandez-Tendero E, Day A, Chabbert B, Takabe K. Distribution of Lignin, Hemicellulose, and Arabinogalactan Protein in Hemp Phloem Fibers. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2018; 24:442-452. [PMID: 30175708 DOI: 10.1017/s1431927618012448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The distribution of lignin, 8-5' and 8-8' linked lignin substructure, and noncellulosic polysaccharides in hemp (Cannabis sativa L.) phloem fibers were explored based on histochemical and immunological methods. Ultraviolet absorption and potassium permanganate staining were observed mainly in the compound middle lamella (CML) and S1 layers, and rarely in the G-layer of phloem fibers, suggesting that lignin concentration is high at the CML and S1 layers, and very low at the G-layer of hemp fibers. Acriflavine staining, uniform KM1 labeling (8-5' linked lignin substructure), and no KM2 labeling (8-8' linked structure) were observed in the G-layer, suggesting that there is a small amount of lignin-like compound with 8-5' linked structure in the G-layer. In addition, some fiber cells showed a multilayered structure. Uniform arabinogalactan protein (AGP) labeling was observed on the S1 layers and G-layers using JIM14, but little appeared in the CML of hemp fibers, indicating that these layers of the phloem fibers contain AGP. Immunogold labeling of xylan (LM11) and glucomannan (LM21) showed that xylan and glucomannan were mainly present in the S1 layers and the G-layers, respectively. In some phloem fibers, LM21 immunofluorescence labeling showed multilayered structure, suggesting the heterogeneous distribution of glucomannan.
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Affiliation(s)
- Shingo Kiyoto
- 1Research Institute for Sustainable Humanosphere (RISH),Kyoto University,Uji,Kyoto 611-0011,Japan
| | - Arata Yoshinaga
- 2Laboratory of Tree Cell Biology,Division of Forest and Biomaterials Science,Graduate School of Agriculture,Kyoto University,Sakyo-ku,Kyoto 606-8502,Japan
| | | | - Arnaud Day
- 4Fibres Recherche Développement,Technopole de l'Aube en Champagne - Hôtel de Bureaux 2,2 rue Gustave Eiffel,CS 90601,10901 TROYES,Cedex 9,France
| | - Brigitte Chabbert
- 3FARE Laboratory,INRA,Université de Reims Champagne-Ardenne,51100 Reims,France
| | - Keiji Takabe
- 2Laboratory of Tree Cell Biology,Division of Forest and Biomaterials Science,Graduate School of Agriculture,Kyoto University,Sakyo-ku,Kyoto 606-8502,Japan
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Key Stages of Fiber Development as Determinants of Bast Fiber Yield and Quality. FIBERS 2018. [DOI: 10.3390/fib6020020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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