**Applications of Cyclodextrins**

**Chapter 3**

Provisional chapter

**Interactions between Bio-Based Compounds and**

DOI: 10.5772/intechopen.73531

Bio-based compounds, such as "green" surfactants and phytochemicals, are regarded as future sustainable resources for a vast range of applications in a modern society increasingly demanding economical, social, and environmental awareness. Natural compounds from plants (phytochemicals) are very sought by the pharmaceutical, cosmetic, and food industries. On the other hand, the growing interest in "green" surfactants (e.g., carbohydrate-based) is due to, inter alia, their preparation from renewable raw materials, ready biodegradability, and biocompatibility, among other reasons of fundamental, practical, economical, and environmental orders. Despite the wide range of potential applications of these bio-based compounds, their practical use is still limited due to many reasons such as poor aqueous solubility, volatility, reactivity, etc. Generally, when complexed with cyclodextrins, these biobased compounds enhance considerably their performance and potential applications. Thus, this chapter aims at recalling some general fundamental aspects of phytochemicals and "green" surfactants, such as structure, function, and applications. In addition, their interactions with cyclodextrins are discussed from a physicochemical point of view with special focus on the techniques, mathematic modeling, and thermodynamic parameters (e.g., inter-

Keywords: sugar-based surfactants, phytochemicals, essential oils, polyphenols,

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and eproduction in any medium, provided the original work is properly cited.

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use,

distribution, and reproduction in any medium, provided the original work is properly cited.

Interactions between Bio-Based Compounds and

Bruno Filipe Figueiras Medronho, Sandra Gonçalves, Raquel Rodríguez-Solana, Artur J.M. Valente and

Bruno Filipe Figueiras Medronho, Sandra Gonçalves, Raquel Rodríguez-Solana, Artur J.M. Valente and

Additional information is available at the end of the chapter

actions, stoichiometries, association constants, etc.).

cyclodextrins, host-guest complex

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/intechopen.73531

**Cyclodextrins**

Cyclodextrins

Anabela Romano

Abstract

Anabela Romano

#### **Interactions between Bio-Based Compounds and Cyclodextrins** Interactions between Bio-Based Compounds and Cyclodextrins

DOI: 10.5772/intechopen.73531

Bruno Filipe Figueiras Medronho, Sandra Gonçalves, Raquel Rodríguez-Solana, Artur J.M. Valente and Anabela Romano Bruno Filipe Figueiras Medronho, Sandra Gonçalves, Raquel Rodríguez-Solana, Artur J.M. Valente and Anabela Romano

Additional information is available at the end of the chapter Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/intechopen.73531

#### Abstract

Bio-based compounds, such as "green" surfactants and phytochemicals, are regarded as future sustainable resources for a vast range of applications in a modern society increasingly demanding economical, social, and environmental awareness. Natural compounds from plants (phytochemicals) are very sought by the pharmaceutical, cosmetic, and food industries. On the other hand, the growing interest in "green" surfactants (e.g., carbohydrate-based) is due to, inter alia, their preparation from renewable raw materials, ready biodegradability, and biocompatibility, among other reasons of fundamental, practical, economical, and environmental orders. Despite the wide range of potential applications of these bio-based compounds, their practical use is still limited due to many reasons such as poor aqueous solubility, volatility, reactivity, etc. Generally, when complexed with cyclodextrins, these biobased compounds enhance considerably their performance and potential applications. Thus, this chapter aims at recalling some general fundamental aspects of phytochemicals and "green" surfactants, such as structure, function, and applications. In addition, their interactions with cyclodextrins are discussed from a physicochemical point of view with special focus on the techniques, mathematic modeling, and thermodynamic parameters (e.g., interactions, stoichiometries, association constants, etc.).

Keywords: sugar-based surfactants, phytochemicals, essential oils, polyphenols, cyclodextrins, host-guest complex

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and eproduction in any medium, provided the original work is properly cited. © 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
