Methylxanthine and Flavonoid Contents from Guarana Seeds (Paullinia cupana): Comparison of Different Drying Techniques and Effects of UV Radiation

ALS da Silva Junior, MM Nascimento… - … Journal of Food …, 2024 - Wiley Online Library
Guarana seeds are typically processed using one of three drying methods: traditional sun
exposure, greenhouse drying, or the alguidar oven technique. In our research, we evaluated …

Guaraná (Paullinia cupana) by‐product as a source of bioactive compounds and as a natural antioxidant for food applications

LS Pinho, MP da Silva, M Thomazini… - Journal of Food …, 2021 - Wiley Online Library
This study aimed to evaluate the extraction and the potential of guaraná peels extract as a
source of bioactive compounds and as a natural antioxidant. Guaraná peels were …

Quantitative Analysis of Caffeine Levels in Local Coffee (Coffea sp) Powder on Dabo Island with UV-Vis Spectrophotometry

S Hainil, S Suhaera, L Lirtri - Borneo Journal of Pharmacy, 2019 - journal.umpr.ac.id
Coffee (Coffea sp) is the second-largest beverage consumed by people around the world
whose process comes from the processing and extraction of coffee beans. Coffee has a …

Concurrent HPLC detection of javamide‐I/‐II, caffeine, 3‐O‐caffeoylquinic acid, 4‐O‐caffeoylquinic acid and 5‐O‐caffeoylquinic acid; their comparative quantification …

JB Park - Separation Science Plus, 2019 - Wiley Online Library
Recent reports suggest that javamide‐I/‐II found in coffee contain anti‐inflammatory activity
greater than 3‐O‐caffeoylquinic acid, 4‐O‐caffeoylquinic acid, 5‐O‐caffeoylquinic acid and …

[PDF][PDF] Determination of CaffeineIn Beverages: A Review

I Gerald, D Ebuka Arthur, A Adedayo - AJER, 2014 - Citeseer
Caffeine is a well-known stimulant which is added as an ingredient to various carbonated
soft drinks. Caffeine has drawn more attention due to its physiological effects beyond that of …

[PDF][PDF] Doseamento de cafeína e análise sensorial de chá preto (Camellia sinensis) preparado com diferentes condições de extração

ML Nascimento - Dissertação (Mestrado)-Universidade Nova de Lisboa, 2014 - core.ac.uk
RESUMO A popularidade do chá preto (Camellia sinensis) mundialmente é indiscutível,
principalmente por ser considerado como uma importante fonte de cafeína. No entanto a …

[HTML][HTML] UHPLC–MS quantification of coumarin and chlorogenic acid in extracts of the medicinal plants known as guaco (Mikania glomerata and Mikania laevigata)

LV Melo, ACHF Sawaya - Revista Brasileira de Farmacognosia, 2015 - SciELO Brasil
Abstract In Brazil, Mikania glomerata Spreng. and M. laevigata Sch. Bip. ex Baker,
Asteraceae, known popularly as guaco, are widely used for colds and asthma. Although …

[PDF][PDF] The qualification and quantification of Caffeine in two different caffeinated pharmaceutical formulas employing RP-HPLC

Z Al-Obaidi - ALBAHIR, 2015 - researchgate.net
Background: Method optimization of drug analysis is an arising approach among
multidisciplinary science fields. The High performance liquid chromatography (HPLC) has …

Determination of biogenic amines in coffee by an optimized liquid chromatographic method

S Casal, M Oliveira, MA Ferreira - Journal of liquid chromatography …, 2002 - Taylor & Francis
An high-performance liquid chromatography (HPLC) method is described for specific and
sensitive quantification of seven biogenic amines in coffee (putrescine, cadaverine …

[HTML][HTML] Health and technological aspects of methylxanthines and polyphenols from guarana: A review

AL Santana, GA Macedo - Journal of Functional Foods, 2018 - Elsevier
Brazil is the major producer of guarana, a stimulant largely consumed worldwide. Interest in
health benefits of its consumption has increased the inclusion of guarana extracts in industry …