Nopal mucilage as hydration agent for quicklime; extraction methods

  • Angélica Pérez Ramos
  • Luis Fernando Guerrero Baca
  • Jose Luz González Chávez
  • Ricardo Prado Núñez
Palabras clave: slaked lime putty, nopal mucilage, galacturonic acid, quicklime slaking process, acid base titrations, extraction methods


The main objective of this research is to select an extraction method of nopal mucilage to be used as a hydration agent at a suitable concentration for slaking quicklime in order to obtain lime putties with better rheological and mechanical properties. An experimental phase was performed where different extraction methods to obtain nopal mucilage were tested. This made it possible to classify them into two groups: methods that require water to get the mucilage, and methods that obtain the mucilage directly from the plant. Galacturonic acid present in mucilage composition seemed to be the main cause of the chemical interaction between lime and mucilage. As a result, mucilage that presented the largest amount of galacturonic acid according to acid base titration curves was chosen as the best one to work with. It was concluded that the amount of galacturonic acid present in mucilage is not influenced by rising temperature and constant stirring during its extraction process, nor the nopal species or cladodes dimension. Furthermore, it was observed that mucilage viscosity obtained through the different extraction methods has a strong impact on the slaking process behavior and in the consistency of the resulting putties.


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Biografía del autor/a

Angélica Pérez Ramos

Angélica Pérez Ramos, architect with a Master’s degree in Architectural restoration and a specialist in conservation of cultural heritage. Current PhD student in the Architecture program at UNAM and a professor of theory and history of architecture at Universidad Iberoamericana Puebla, Mexico (UIA). Zoquiapa 218A El Pilar, San Pedro Cholula, Puebla Mexico.

Luis Fernando Guerrero Baca

Luis Fernando Guerrero Baca, architect with a Master’s degree in Architectural Restoration, and a PhD in Heritage Conservation. Professor and researcher at the Autonomous Metropolitan University-Xochimilco in Mexico City, member of the PROTERRA Ibero-American Network, and the Scientific Committee of Earth Structures of ICOMOS-México. Expert Member of the ICOMOS International Scientific Committee on Earthen Architectural Heritage. Representative at the UAM-Xochimilco of the Chaire UNESCO “Architectures de terre, Cultures constructives et Development durable”. UAM Xochimilco. Calzada del Hueso 1100, Col. Villa Quietud, Delegación Coyoacán, C.P. 04960, D.F. México.

Jose Luz González Chávez

Jose Luz González Chávez, chemist with a Master’s degree in Chemistry (Analytical Chemistry), and a PhD in State in Physical Sciences (Analytical Chemistry) from the University of Nancy, France. An Inspector of weapons of mass destruction (chemical weapons) for the Security Council of the UN. Member of the scientific advisory board, the evaluation committee of the organization for the control of chemical weapons UN. Member of the standing committee review of the pharmacopoeia of Mexico. Chemistry Faculty, Av. Universidad 3000, Circuito Exterior S/N Delegación Coyoacán, C.P. 04510 Ciudad Universitaria, D.F. México.

Ricardo Prado Núñez

Ricardo Prado Núñez, architect with a Master’s degree in Buildings and Monuments Restoration. A professor and researcher at the UNAM. He has focused his fruitful career to the restoration of buildings and historical monuments, as designer, project manager and contractor. Dr. Prado’s prestige has led him to occupy various positions in both private and government institutions, such as in the conservation of Monuments of the Federal District (1971-1976) and as a consultant at the National Institute of Fine Arts (INBA) (1995-1998). Architecture Faculty. Av. Universidad 3000, Circuito Exterior S/N Delegación Coyoacán, C.P. 04510 Ciudad Universitaria, D.F. México.

Cómo citar
Pérez Ramos, A., Guerrero Baca, L. F., González Chávez, J. L., & Prado Núñez, R. (2017). Nopal mucilage as hydration agent for quicklime; extraction methods. Ge-Conservacion, 11, 189-195.