Buscar
Mostrando ítems 21-30 de 2323
The influence of different yeasts on the fermentation, composition and sensory quality of cachaca
(SpringerNew YorkEUA, 2005)
Volatile matter release and thin and thick char formation as a function of vitrinite content, coal rank, time and temperature devolatilization.
(2014-04-10)
Pulverized coal combustion is determined by char chemical reactivity, which depends of its morphology developed during the devolatilization process. In this work, some empirical relationships were obtained, in order to ...
Tóxicos Volátiles y Gaseosos
(Praia, 2006)
Se clasifican como tóxicos volátiles y gaseosos a todas las sustancias que independientemente de su estado físico, puedan separarse de la matriz que los contienen por destilación simple, destilación por arrastre con vapor, ...
Direct analysis of néctar and floral volatile organic compounds in hybrid onions by HS-SPME/GC-MS: Relationship with pollination and seed production
(2016)
In this study, a simple and solvent-free method using headspace solid-phase microextraction (SPME) and gas chromatography–mass spectrometry (GC–MS) was developed for determination of the volatile compounds from fresh flowers ...
The use of radon (Rn-222) and volatile organic compounds in monitoring soil gas to localize NAPL contamination at a gas station in Rio Claro, Sao Paulo State, Brazil
(Elsevier B.V., 2014-07-01)
This study focuses on the presence of radon (Rn-222) and volatile organic compounds (VOCs) in soil gases at a gas station located in the city of Rio Claro, Sao Paulo, Brazil, where a fossil fuel leak occurred. The spatial ...
Evolution of the Volatile Organic Compounds, Phenols and Antioxidant Capacity during Fruit Ripening and Development of Rubus ulmifolius Schott Fruits
(MDPI, 2023-01)
Nowadays, a growing interest in consumers’ fruit with a high content of health-promoting compounds has been observed. In this sense, wild berries have received special attention based on their high accumulation of phenolic ...
Influência do material do alambique na composição química das aguardentes de cana-de-açúcar
(Sociedade Brasileira de Química, 1998-11-01)
This paper describes variations in the profile of the main volatile organic compounds present in Brazilian sugar cane spirits distilled in copper and stainless steel distillers. The main organic compounds: aldehydes, ...
Influência do material do alambique na composição química das aguardentes de cana-de-açúcar
(Sociedade Brasileira de Química, 1998-11-01)
This paper describes variations in the profile of the main volatile organic compounds present in Brazilian sugar cane spirits distilled in copper and stainless steel distillers. The main organic compounds: aldehydes, ...
Geographical chemical variability and processing oxidation of volatile compounds of Casearia sylvestris leaves
(2021-01-01)
The Casearia sylvestris Sw. dried leaf essential oil (EO) contains sesquiterpenes as the main components. However, the volatile components in the in natura leaves remain unknown. This study compares the volatile chemicals ...