Rapid determination of chemical components and antioxidant activity of the fruit of Crataegus pinnatifida Bunge by NIRS and chemometrics

Rapid Measurement of Antioxidant Properties of Dendrobium officinale Using Near-Infrared Spectroscopy and Chemometrics

“…Other intense absorption peaks were mainly observed around 1210 nm, 1730 nm, 2280 nm, and 2330 nm. The peaks around 1210 and 1730 nm were caused by the second overtone of C-H stretching vibration and the first overtone of the C-H stretching vibration [ 11 ], respectively. In addition, the broad peaks located at 2280 nm and 2330 nm were derived from a combination of C-H and -CH 2 stretching and deformation vibrations.…”

“…For example, it involves easily operated instruments, simple sample pre-processing, and fast detection speeds. The absorption spectrum of NIR lies in range of 1000–2500 nm and is related to the hydrogen-containing functional groups such as C-H, N-H, O-H, and S-H [ 11 , 12 , 13 ]. Due to the fact that bioactive components contain large amounts of the above-mentioned hydrogen-containing groups, NIR information can be associated with these chemical parameters to develop a quantitative analytical model.…”

“…Due to the fact that bioactive components contain large amounts of the above-mentioned hydrogen-containing groups, NIR information can be associated with these chemical parameters to develop a quantitative analytical model. At present, NIR spectroscopy technology is widely used in agriculture [ 14 , 15 , 16 ], food [ 11 , 17 , 18 , 19 ], medicine [ 20 , 21 , 22 ], petrochemistry [ 23 , 24 , 25 ], and other fields. There are numerous studies confirming that NIR has good potential to successfully predict the antioxidant activity of Chinese medicine.…”

Research Progress on Extraction and Detection Technologies of Flavonoid Compounds in Foods

“…Escuredo et al [104] used the same method to accurately predict potato tubers' phenol content, flavonoid content, antioxidant capacity, dry matter, texture, and soluble solid content. Ye et al [105] used NIR to achieve the rapid determination of total components (flavonoids, phenols, and organic acids) and monomer components (chlorogenic acid, hyperoside, and isoquercitrin) in Shanzha.…”

The Effects of Crataegus pinnatifida and Wolfiporia extensa Combination on Diet-Induced Obesity and Gut Microbiota

“…It has a tart-sweet taste and is abundant in phenols, flavonoids, terpenoids, fiber, and organic acids [ 12 , 13 , 14 ]. It has been documented that these chemical constituents exhibit a wide range of pharmacological effects, including anticancer properties, antioxidant activity, improvement of glycolipid metabolism, and facilitation of digestive processes [ 12 , 13 , 14 , 15 , 16 ]. Wolfiporia extensa (WE), or Fu Ling, is an edible fungus with a long consumption history.…”