Effects of Specific Carob (Ceratonia siliqua L.) Liquid Concentrate on Glucose Metabolism in Subjects with Prediabetes: A Randomized Double-Blind Controlled Clinical Trial.

Background/Objectives: A 90-day randomized double-blind and placebo-controlled study was conducted to assess the effect of carob (Ceratonia siliqua L.) on glucose metabolism in subjects with confirmed prediabetes. Methods: The carob liquid concentrate containing inositols of the carob fruit (D-pinit...

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Publicado en:Nutrients Vol. 18; no. 10; pp. 1521 - 1538
Autores principales: Pérez-Piñero, Silvia, Muñoz-Carrillo, Juan Carlos, Herrera-Fernández, Cristina, Muñoz-Cámara, Macarena, Hernández-Aliaga, Almudena, Echepare-Taberna, Jon, Ávila-Gandía, Vicente, López-Román, Francisco Javier
Formato: research tables/charts randomized controlled trial Journal Article
Publicado: MDPI May2026
Acceso en línea:Ver este registro en EBSCOhost
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      dt: May2026
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      pub: MDPI
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        10.3390/nu18101521
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        atl: Effects of Specific Carob (Ceratonia siliqua L.) Liquid Concentrate on Glucose Metabolism in Subjects with Prediabetes: A Randomized Double-Blind Controlled Clinical Trial.
      aug:
        au:
          Pérez-Piñero, Silvia
          Muñoz-Carrillo, Juan Carlos
          Herrera-Fernández, Cristina
          Muñoz-Cámara, Macarena
          Hernández-Aliaga, Almudena
          Echepare-Taberna, Jon
          Ávila-Gandía, Vicente
          López-Román, Francisco Javier
        affil: Health Sciences Department, Universidad Católica San Antonio de Murcia (UCAM), Campus de los Jerónimos, Carretera de Guadalupe s/n, Guadalupe, E-30107 Murcia, Spain
      sug:
        subj:
          Plant Extracts Pharmacodynamics
          Blood Glucose Metabolism
          Prediabetic State Drug Therapy
          Treatment Outcomes
          Human
          Randomized Controlled Trials
          Double-Blind Studies
          Male
          Female
          Adolescence
          Adult
          Middle Age
          Aged
          Random Assignment
          Plant Extracts Administration and Dosage
          Placebos Administration and Dosage
          Glucose Tolerance Test
          ROC Curve Evaluation
          Insulin Blood
          Glycated Hemoglobin Analysis
          Immunoassay
          Diet Records
          Repeated Measures
          Analysis of Variance
          Post Hoc Analysis
          Mann-Whitney U Test
          Friedman Test
          Data Analysis Software
          Funding Source
          Lipoproteins, LDL Cholesterol Analysis
          Triglycerides Analysis
          Blood Glucose Analysis
          Insulin Resistance Evaluation
          Insulin Sensitivity Drug Therapy
          Medication Compliance Evaluation
          Adolescent: 13-18 years
          Adult: 19-44 years
          Middle Aged: 45-64 years
          Aged: 65+ years
          Male
          Female
      ab: Background/Objectives: A 90-day randomized double-blind and placebo-controlled study was conducted to assess the effect of carob (Ceratonia siliqua L.) on glucose metabolism in subjects with confirmed prediabetes. Methods: The carob liquid concentrate containing inositols of the carob fruit (D-pinitol, myo-inositol, D-chiro inositol) was administered at a daily dose of 6.66 g, divided into two doses of 3.33 g each. Study variables included glucose- and insulin-related parameters obtained at fasting conditions and during a standard 2 h oral glucose tolerance test (OGTT) at baseline and after 45 and 90 days of administration of the study products. Results: The study population included 52 subjects (25 in the experimental group, 27 in the placebo group), 27 men and 25 women, with a mean age of 45.6 ± 13.9 years. Subjects who consumed the active product showed improvements in glycated hemoglobin (HbA1c) and glucose levels as compared with placebo (p < 0.001 of the time × group interaction). Fasting serum insulin showed within-group significant decreases in the experimental group, with insulin indexes (HOMA-IR and QUICKI) improving significantly in the experimental group only. In the OGTT, there were significant improvements in the AUC of glucose and insulin, as well as glucose peak in the experimental group only. The product was well tolerated and no adverse effects were recorded. Conclusions: The use of a specific carob-based liquid concentrate decreased HbA1c and glucose levels in subjects with prediabetes, which may suggest its potential clinical relevance in the prevention of the transition from prediabetes to overt type 2 diabetes.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        randomized controlled trial
        Journal Article
      ougenre: Article
    language: English
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