Optimization of the Iron Electro-Coagulation Process of Cr, Ni, Cu, and Zn Galvanization By-Products by Using Response Surface Methodology

The soursop fruit or Annona muricata (A. muricata) fruit is recognized by its bioactive compounds and acetogenins (ACG) are among the most important. The effect of ACGs, with greater importance in health, is that they present anti-tumor activity; however, the methods of extraction of ACGs are very slow and with a high expenditure of solvents. To our knowledge, there is no report of an optimal method for the extraction of acetogenins from the Annonaceae family by ultrasound-assisted extraction (UAE); therefore, the aim was to find the best UEA conditions of acetogenins from A. muricata fruit (peel, pulp, seed, and columella) by using response surface methodology. The effect of amplitude (40%, 70%, and 100%), time (5, 10, and 15 min), and pulse-cycle (0.4, 0.7, and 1 s) of ultrasound at 24 kHz was evaluated on the total acetogenin content (TAC). Optimal extraction conditions of acetogenins (ACGs) with UEA were compared with the extraction of ACGs by maceration. The optimal UEA conditions in the A. muricata pulp and by-products were dependent on each raw material. The highest TAC was found in the seed (13.01 mg/g dry weight (DW)), followed by the peel (1.69 mg/g DW), the pulp (1.67 mg/g DW), and columella (1.52 mg/g DW). The experimental TAC correlated well with the model (Adjusted R2 with values between 0.88 and 0.97). The highest effectiveness in ACG extraction was obtained in seeds and peels using UEA compared to extraction by maceration (993% and 650%, respectively). The results showed that A. muricata by-products are an important source of ACGs and that UAE could be a viable alternative, with high potential for large-scale extraction.

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Optimisation of xanthan gum production by palm date (Phoenix dactylifera L.) juice by-products using response surface methodology

Food Chemistry ◽

10.1016/j.foodchem.2009.12.077 ◽

2010 ◽

Vol 121 (2) ◽

pp. 627-633 ◽

Cited By ~ 50

Author(s):

Riadh Ben Salah ◽

Kacem Chaari ◽

Souhail Besbes ◽

Naourez Ktari ◽

Christophe Blecker ◽

...

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Xanthan Gum ◽

Phoenix Dactylifera ◽

Phoenix Dactylifera L ◽

By Products

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Response surface methodology for evaluation of physical and functional properties of extruded snack foods developed from food-by-products

Journal of Food Engineering ◽

10.1016/j.jfoodeng.2007.09.018 ◽

2008 ◽

Vol 86 (1) ◽

pp. 122-132 ◽

Cited By ~ 116

Author(s):

Sibel Yağcı ◽

Fahrettin Göğüş

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Functional Properties ◽

Snack Foods ◽

By Products

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Harvesting of microalgae by electro-coagulation-flocculation for biodiesel production: an investigation of the effect of operational parameters and forecast model using response surface methodology

International Journal of Biosciences (IJB) ◽

10.12692/ijb/4.7.258-269 ◽

2014 ◽

pp. 258-269 ◽

Cited By ~ 1

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Forecast Model ◽

Biodiesel Production ◽

Operational Parameters ◽

Electro Coagulation

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Utilization of agro-industrial by-products as substrates for dextransucrase production by leuconostoc mesenteroides T3: Process optimization using response surface methodology

Hemijska industrija ◽

10.2298/hemind200710015m ◽

2021 ◽

pp. 15-15

Author(s):

Miona Miljkovic ◽

Sladjana Davidovic ◽

Aleksandra Djukic-Vukovic ◽

Mila Ilic ◽

Milica Simovic ◽

...

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Leuconostoc Mesenteroides ◽

Sucrose Concentration ◽

Manganese Concentration ◽

Application Range ◽

Linear Effect ◽

Central Composite ◽

By Products ◽

Environmental Relevance

Dextransucrase (DS) is a glucosyltransferase (E. C. 2.4.1.5) that catalyzes the transfer of glucosyl residues from sucrose to dextran polymer and liberates fructose. This enzyme is associated with a wide application range of dextran and oligosaccharides. DS production by Leuconostoc mesenteroides T3 was optimized using a Central Composite Design under the Response Surface Methodology. Three variables were chosen for optimization: distillery stillage, sucrose and manganese concentration. The results showed that sucrose and manganese concentrations had a positive linear effect on DS production while all variable interactions (stillage-manganese, stillage-sucrose, and sucrose-manganese) had significant influences on the DS production. The maximal DS yield of 3.391?0.131 U cm-3, was obtained in the medium with 64.33 % distillery stillage concentration, 5.30 % sucrose concentration and 0.022 % manganese concentration. Our study revealed the potential of distillery stillage combined with sugar beet molasses, supplemented with sucrose and manganese to be employed as a valuable medium growth for lactic acid bacteria and production of DS. Also, taking into consideration the origin of the substrates, utilization of industrial by-products in this way has a great environmental relevance and is in accordance with circular economy.

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