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Canas, SilviaCorresponding AuthorRebollo-Hernanz, MiguelCorresponding AuthorAguilera, YolandaAuthorBenitez, VanesaAuthorGila-Díaz, AndreaAuthorGonzález, Maria Del CarmenAuthorArribas, Silvia M.AuthorMartin-Cabrejas, Maria A.Author

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November 21, 2021
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Critical Evaluation of Coffee Pulp as an Innovative Antioxidant Dietary Fiber Ingredient: Nutritional Value, Functional Properties, and Acute and Sub-Chronic Toxicity

Publicated to:Proceedings. 65-65 - 2021-04-05 (), DOI: 10.3390/foods_2020-07623

Authors: Silvia Cañas; Miguel Rebollo‐Hernanz; Paz Cano‐Muñoz; Yolanda Aguilera; Vanesa Benítez; Cheyenne Braojos; Andrea Gila-Díaz; Pilar Rodríguez‐Rodríguez; Ignacio Monedo Cobeta; Ángel L. López de Pablo; M. Carmen González; Silvia M. Arribas; Maria A. Martín‐Cabrejas

Affiliations

Instituto de Investigación en Ciencias de la Alimentación - Author
Universidad Autónoma de Madrid - Author

Abstract

Coffee pulp is a by-product generated during coffee processing, producing environmental pollution when discarded in rivers. The revalorization of coffee by-products is currently being studied due to their high potential as new value-added food ingredients. This work aims to explore the chemical composition and functional properties of coffee pulp and validate its safety for use as a novel food ingredient. Coffee pulp composition was assessed following the standard methods (AOAC). Physicochemical properties, total phenolic compounds (TPC), antioxidant capacity, hypoglycemic and hypolipidemic properties were determined using in vitro techniques. Acute and sub-chronic oral toxicity experiments were carried out following OECD Test Guidelines 452 and 408. Coffee pulp showed a high content of dietary fiber (51.2%), highlighting the insoluble fraction. Proteins (9.2%) and lipids (2.6%) were considered a min fraction. Coffee pulp presented high content of TPC (40.6 mg g?1), of which 29% were linked to DF, giving coffee pulp its antioxidant potential (102.3 mg Trolox eq g?1). The by-product showed good physicochemical properties. Coffee pulp reduced the absorption of cholesterol (84%) and bile salts (85%), inhibited pancreatic lipase (64%), and presented the capacity to diminish the diffusion of glucose (34%). The intake of coffee pulp did not cause significant lesions in vital organs. In conclusion, the coffee pulp could be used as a potential ingredient with beneficial health properties.

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Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 3.19, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-05:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 66 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Additionally, the work has been submitted to a journal classified as Diamond in relation to this type of editorial policy.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://repositorio.uam.es/handle/10486/702219

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (CAÑAS RODRIGUEZ, SILVIA) and Last Author (MARTIN CABREJAS, M. ANGELES).

the authors responsible for correspondence tasks have been CAÑAS RODRIGUEZ, SILVIA and REBOLLO HERNANZ, MIGUEL.