Application of response surface method for optimization of dispersive liquid–liquid microextraction of water-soluble components of Rosa damascena Mill. essential oil

2009 ◽  
Vol 1216 (2) ◽  
pp. 198-204 ◽  
Author(s):  
Hassan Sereshti ◽  
Maryam Karimi ◽  
Soheila Samadi
Keyword(s):  
Essential Oil ◽  
Response Surface ◽  
Response Surface Method ◽  
Water Soluble ◽  
Rosa Damascena ◽  
Surface Method ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction ◽  
Soluble Components

scholarly journals Response Surface Method in Evaluating the Extrusion Effects on Molecular Degradation and Physical Properties of Sago Starch

2020 ◽  
pp. 1-10
Author(s):  
Ansharullah Ansharullah ◽  
Sri Wahyuni ◽  
. Tamrin ◽  
Muhammad Natsir
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Water Solubility ◽  
Mechanical Energy ◽  
Sugar Content ◽  
Water Soluble ◽  
Process Conditions ◽  
Sago Starch ◽  
Melt Temperature ◽  
Surface Method

This study was aimed to measure the effect of extrusion on the molecular degradation and physical characteristics of the sago starch by employing response surface method. The starch was extruded in a twin screw extruder with moisture contents of 25, 32.5, and 40%; melt temperature of 86, 95 and 104oC; and screw speed of 100, 150, and 200 rpm. The extruded products were then analyzed for degree of molecular degradation, reducing sugars of the water soluble materials, water solubility index (WSI), water absorption index (WAI), enzyme susceptibility, gelatinization endothermic energy (∆H), and specific mechanical energy (SME). Increased mechanical and thermal energy input received by the products in the extruder gave rise to a significant degradation of the molecular weight of the macromolecules. It was believed that granule structures of the extruded starch have been reshaped. The extrusion process conditions did not significantly affect the WSI, WAI, reducing sugar content, and ∆H. All extruded samples had a much lower gelatinization endothermic energy than native starch.

A Proposal of PSO with Presumption Function of the Solution Landscape by Response Surface Method

2014 ◽  
Vol 134 (9) ◽  
pp. 1293-1298
Author(s):  
Toshiya Kaihara ◽  
Nobutada Fuji ◽  
Tomomi Nonaka ◽  
Yuma Tomoi
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Surface Method
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