The effect of size and acetylation degree of chitosan derivatives on tobacco plant protection against Phytophthora parasitica nicotianae

Falcón, A.; Cabrera, Juan Carlos; Costales, Daimy; Ramírez, Miguel Ángel; Cabrera, G.; Toledo, Verónica; Martínez-Téllez, Miguel Ángel

doi:10.1007/s11274-007-9445-0

Cited by 74 publications

(47 citation statements)

References 41 publications

(25 reference statements)

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“…According to Falcón et al (2008), the lower the degree of chitosan deacetylation, the greater its ability to activate plant defense mechanisms, such as the activity of peroxidases and phenylalanine-ammonia lyase. This helps explain the higher efficiency of high-density chitosan, with lower degree of deacetylation, for the control of tomato bacterial spot verified in the present study.…”

Section: Resultsmentioning

confidence: 99%

High-density chitosan reduces the severity of bacterial spot and activates the defense mechanisms of tomato plants

Jail¹,

Luiz²,

Neto³

et al. 2014

Trop. plant pathol.

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Section: Resultsmentioning

confidence: 99%

High-density chitosan reduces the severity of bacterial spot and activates the defense mechanisms of tomato plants

Jail¹,

Luiz²,

Neto³

et al. 2014

Trop. plant pathol.

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“…(No et al 2002;Tin et al 2009), fungi (A. niger, Alternaria alternata, Alternaria solani, Phomopsis asparagi, Rhizopus stolonifer, Rhizopus oryzae, Phytophthora capsici, Phytophthora parasítica, Verticillium dahlia, Colletotrichum orbiculare, Exserohilum turcicum, Pyricularia oryzae, Botrytis cinerea, Fusarium oxysporum, Fusarium graminearum, Fusarium sulphureum, Fusarium solani, Candida albicans, Neurospora crassa, Penicillium expansum, Penicillum digitatum, etc.) (Reddy et al 1998;Guerra-S 0 anchez et al 2009;Zhong et al 2007;Ziani et al 2009;Falcón et al 2008;Kong et al 2010;Yong-cai et al 2009;Lafontaine and Benhamou 1996;Lauzardo 2009;Rane and Hoover 1993;Ting et al 2007;Xu et al 2007;Palma-Guerrero et al 2009;Pacheco et al 2008) and parasites (Trichomonas gallinae, E. granulosus, Cryptosporidium parvum, Philasterides dicentrarchi, etc.) (Tavassoli et al 2012;Fakhar et al 2013;Brown and Emelko 2008;Parama et al 2005).…”

Section: Discussionmentioning

confidence: 99%

The anti-giardial effectiveness of fungal and commercial chitosan against Giardia intestinalis cysts in vitro

et al. 2014

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Chitosan with poly-N-acetylglucosamine sequences is a deacetylated derivative of chitin that can be found in the exoskeletons of crabs, shrimp and lobsters, the cuticles of insects and the cell walls of fungi. The aim of the present study was to compare the effects of fungal chitosan (FC) prepared from the cell walls of Penicillium viridicatum and Penicillium aurantiogriseum with commercially available chitosan (CC) against Giardia intestinalis cysts in vitro. The giardia cysts were isolated using a sucrose method. Four concentrations (50, 100, 200 and 400 lg/ml) of each type of prepared chitosan were applied for 10, 30, 60 and 180 min. The viability of the cysts was checked via 0.1 % eosin staining. Our results indicate that P. viridicatum (with a 47.5 % DD) and P. aurantiogriseum (with a 47.3 % DD) at different concentrations after 180 min precipitated, respectively, 56, 69, 81 and 100 %, and 63, 75, 86 and 100 % mortality rates. CC (with a 54 % DD) showed 79, 84, 93 and 100 % mortality rates. In conclusion, both FC and CC at 400 lg/ml concentrations after 180 min of exposure showed the most potent effect against G. intestinalis cysts. Accordingly, chitosan could be suggested as a new natural nanoform agent for future research in the safe and effective treatment of Giardia infections.

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“…In order to overcome this solubility-problem, chitin is generally converted into the more soluble chitosan (its N-deacetylated form), which can be dissolved into weak acid environments. The enhanced solubility of chitosan allows its use in several technological fields, such as in membranes for water softening processes [52], in water treatments as adsorbing material (alone or grafted to selected nanometric substrates) [53][54][55][56], in the agriculture industry as a protective agent against oxidation [57], as a bioplastic for food packaging [58,59], in the cosmetic industry as a moisturizing/conditioning agent [50], as carbon precursors for the development of cathodes in Li-S batteries [60], and in biomedicine as a drug delivery system and/or as hydrogels [61][62][63], as an antimicrobial agent/coating [34,64,65], and as technical anti-allergic textiles/sutures [66,67].…”

Section: The Chitin Industry Case Studymentioning

confidence: 99%

Aquatic-Derived Biomaterials for a Sustainable Future: A European Opportunity

Nisticò

2017

Resources

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Abstract:The valorization of aquatic-derived biowastes as possible feedstock for the production of value-added chemicals and materials is proposed here as a sustainable alternative compared to the exploitation of the more conventional (fossil) resources. In this context, the comprehension of the opportunity related to the valorization of the shellfish industry biowaste for the production of useful materials, especially focusing on chitin and its derived byproducts, is investigated. The large amount of waste produced each year by the shellfish processing industry seems to be an appealing opportunity for the European market to produce valuable products from underutilized waste. In order to highlight this important market-opportunity, the actual European situation concerning the shellfish volume of production is presented. The industrial processes necessary for the recovery of chitin, chitosan, and their derivatives are largely described, together with a wide description of their peculiar (and interesting) physicochemical properties. Even if nowadays the scientific literature suggests that this class of biopolymers is very appealing, further research is still necessary for overcoming some criticisms still present in the extraction and valorization of such substrates. However, the principles of both circular economy and green chemistry encourage the reduction of such biowastes and their exploitation as an alternative resource for a global sustainable future.

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The effect of size and acetylation degree of chitosan derivatives on tobacco plant protection against Phytophthora parasitica nicotianae

Cited by 74 publications

References 41 publications

High-density chitosan reduces the severity of bacterial spot and activates the defense mechanisms of tomato plants

High-density chitosan reduces the severity of bacterial spot and activates the defense mechanisms of tomato plants

The anti-giardial effectiveness of fungal and commercial chitosan against Giardia intestinalis cysts in vitro

Aquatic-Derived Biomaterials for a Sustainable Future: A European Opportunity

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