Plant Insecticides - Inclusion Compounds Of Rotenone Cyclodextrin Or Cyclodextrin Derivatives

Botanical insecticides are the main insecticidal active ingredient extracted from insecticidal plants, because of its safety from plants, generally have a higher, better environmental compatibility, effects on non target organisms is low, its mode of action and effects of site diversity, resistance and other advantages of the pests are not easy to produce, is a highly toxic chemical pesticide alternatives have been widely used in plant protection. Rotenone is a high activity early isolated, broad-spectrum insecticide, it has high insecticidal activity. There are a variety of rotenone as the main ingredients of pesticides, such as.094100790.1 Chinese patent; and some of the mixed or rotenone EC product has been registered and widely used. But because of the presence of unsaturated bond in the molecular structure of rotenone in the ether bond, carbonyl active hydrogen atoms and tension in the ultraviolet, rotenone Light, as well as in water, oxygen, high temperature and rapid degradation conditions, prevention is not conducive to the preservation of pesticides and pests. In addition because rotenone is not soluble in water, generally need to use EC made by adding organic solvent, organic solvent and solvent volatilization of large consumption of the environment impact of the need to be resolved.

The rotenone with cyclodextrin or its derivatives by co precipitation method, solid state reaction reaction, generating ellipton cyclodextrin or its derivative clathrate rotenone. After the formation of inclusion complexes of cyclodextrins, steric and complexation protection in the cavity of rotenone degradation reaction rate of rotenone decreased pesticides become stable. At the same time, a plurality of hydroxyl ring dextrin outside the cavity helps improve the solubility of water in the cavity of rotenone rotenone, cyclodextrin or cyclodextrin derivative which is obtained by the invention is the inclusion of pine wood nematode killing effect was serious harm to Chinese pine, improve the stability of insecticide rotenone ultraviolet light and heat, prolong at the same time duration, insecticides, insecticide rotenone enhance the solubility of insoluble in water in a certain extent.

Natural Cyclodextrins

The most common cyclodextrins are alpha, beta, and gamma cyclodextrins having six (α), seven (β), or eight (γ) anhydroglucose units in the ring structure. Among them, beta Cyclodextrin is mostly common used.
Different sizes lead to different physicochemical characteristics for the respective molecules:

Chemically modified Cyclodextrins
Cyclodextrins can be modified by various procedures such as:

Substituting one or more hydrogen atoms in the primary and/or secondary hydroxyl groups (esters, ethers, glycosylcyclodextrin)

Substituting one or more primary and/or secondary hydroxyl groups

Chemically modified Cyclodextrins (CDM's) exhibit substantially increased aqueous solubility with concomitant retention of the inclusion complexing properties of the starting Cyclodextrin. They therefore appear to offer specific applications within various industries, such as foods, pharmaceuticals, personal care/cosmetics, diagnostics, etc. Hydroxyalkyl b Cyclodextrins such as Hydroxypropyl b Cyclodextrin are examples of those chemically modified Cyclodextrins.

Natural Alpha Beta Gamma Cyclodextrin

Natural Beta Cyclodextrin,Natural Alpha Cyclodextrin,Natural Gamma Cyclodextrin

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