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Recovery of polyphenols from camu-camu(Myrciaria dubia ***)depulping residue by cloud point extraction

Chinese Journal of Chemical Engineering 2018年第12期26卷 2471-2476页

作者： Carlos Eduardo de Araujo Padilha Juliana Chris Silva de Azevedo Francisco Caninde de Sousa Junior Sergio Dantas de Oliveira Junior Domingos Fabiano de Santana Souza Jackson Araujo de Oliveira Gorete Ribeiro de Macedo Everaldo Silvino dos Santos Laboratory of Biochemical Engineering Chemical Engineering Department Federal University of Rio Grande do Notre(UFRN)NatalRNBrazil Laboratory of Food Bioactive Compounds and Dairy Technology Chemical Engineering DepartmentFederal University of Rio Grande do Notre(UFRN)NatalRNBrazil

In this study the potential of cloud point extraction formed by a non-ionic surfactant was used in order to separate polyphenols from industrial residues of camu-camu. The effects of operational conditions of the cloud point extraction(CPE) on the polyphenol recovery and volumetric ratio were investigated. The results showed a maximum recovery of 95.71% that was obtained using 7.0 wt% Triton X-114, native pH(3.25), and 80 wt%polyphenol extract at 30 °C. The use of cloud point extraction was successful to recover the polyphenols from agroindustrial residue since it is a simple as well as of low-cost technique.

关键词： Cloud point extraction Recovery Polyphenols camu-camu Depulping residue

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Acute hepatitis associated with the use of natural product camu-camu

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Open Journal of Gastroenterology 2013年第3期3卷 214-216页

作者： Raffaela Bertoli Luca Mazzuchelli Andreas Cerny Clinica Luganese Moncucco Lugano Switzerland Istituto Cantonale di Patologia Locarno Switzerland Servizio di Consulenza sui Farmaci e Centro Regionale di Farmacovigilanza Ospedale Regionale di Lugano Lugano Switzerland

A 45-year-old previously healthy caucasian man was admitted for pruritus, scleral icterus and dark urine. The patient was reported to have taken a spoon of a preparation containing camu-camu (myrciaria dubia) a day. He took no other drugs and did not drink alcohol or use illicit substance. Laboratory studies reveiled an elevated aspartate transaminase of 403 U/L, and alanine transaminase of 1185 U/L, alkalinephosphatase of 335 U/L, gamma glutamyl transpeptidase of 300 U/L, and elevated total bilirubin of 142 μmol/L. His complete blood count was normal. Tests for viral, metabolic or autoimmune causes of liver injury were negative. Liver biopsy demonstrated centrilobular hepatocellular damage was compatible with drug toxicity which was not of very recent origin. Clinical and laboratory signs of liver injury gradually improved and the patient was discharged. Myrciaria dubia is used as a dietary supplement with antioxidant properties. To our knowledge, this is the first report of liver injury probably related to use of camu-camu. Exclusion of other causes and the histological diagnosis were compatible with drug toxicity render camu-camu which was most likely as the cause of acute heaptitis most likely. It is important to increase the awareness of both clinicians and patients about the potential dangers of herbal remedies in absence of reliable studies of clinical efficacy and benefit-risk assessment.

关键词： camu-camu Herbal Remedies Hepatitis Liver Damage

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