Ultrasound aided extraction of yellow pigment from Tecoma castanifolia floral petals: Optimization by response surface method and evaluation of the antioxidant activity

Production, purification, and process optimization of intracellular pigment from novel psychrotolerant Paenibacillus sp. BPW19

“…Fisher’s F-test checked the statistical significance of the model whereas the coefficient of determination R 2 expressed the polynomial model’s fit quality. Based on the effect of three factors, the respective contour plots were obtained for both the levels [ 55 , 56 ].…”

“…The temperature was increased again at a rate of 20 °C/min up to 280 °C and held for 3 min. A split ratio of 1:50 was maintained with Helium being used as inert carrier gas at a flow rate of 1 mL/min [ 56 , 62 , 63 ].…”

Determination Extraction Conditions for Maximum Phenolic Compounds in the Kiwifruit Using Response Surface Design

“…Results under that conditions, total anthocyanin (10.26 ±0.39 (mg/ 100 g)), phenolics (552.64 ± 1.57 (mg GAE/100 g)), and flavonoid (104± 1.13 (mg RE/100 g)) contents were found. In the research conducted by (Sharmila et al, 2019), response surface analysis estimated the optimal level of sonication power, flower mass, extraction time and methanol concentration at 30W, 2 g, 15 min., and 100% respectively for the maximum response of pigment absorbance (3.46), TPC (246.6 mg/g, and antioxidant activity (55.7%). In their study on the ultrasound-assisted extraction of trademarked teas by (Afroz Bakht et al, 2018), frequencies (26 kHz.…”

New insight into the joint significance of dietary jujube polysaccharides and 6-gingerol in antioxidant and antitumor activities

“…The two absorption bands were generally regarded as typical bands of polysaccharides. 36 The obvious absorption peaks at around 1744 and 1638 cm À1 were probably due to the C]O and COO À stretching vibrations of the esteried groups, respectively, which indicated the presence of uronic acids. 37 The bands at 1405 and 1240 cm À1 belonged to the C-H bending vibration.…”