Thermophysical Properties of Volatile Products of Low-Temperature Pyrolysis of Wood Biomass

Multiple indicators metrological analysis for 5 kinds of tea produced in Yunnan, China

“…Five kinds of tea, including camphor-scented palace tea, fossil glutinous rice tea, old tree white tea, Brown Mountain ancient tree tea and pure Banzhang tea, from Yunnan Province, China, were selected as the samples for analysis. The combustion heat (Direktor et al, 2020;Zhang et al, 2022) was measured by an oxygen bomb calorimeter, the combustion stability (Xie et al, 2021;Zhang et al, 2020) of tea was analyzed by thermogravimetric analysis, the fat content was measured by a fat analyzer (Ellers, 1995;Ender et al, 1997;Zhang et al, 2011), and the trace element content was measured by IOP-OES (Jung et al, 2019;Oropeza et al, 2019). According to the combustion heat, thermogravimetric parameters, fat contents, crude fiber contents, trace element contents, and ash contents, a multi-index comprehensive evaluation system (Jia et al, 2017;Chenghua et al, 2016) of five kinds of tea was established, and entropy analysis and entropy cluster analysis were used to evaluate nutritional value.…”