Optimization of the extraction process for quality control ... · by microwave irradiation-assisted...
Transcript of Optimization of the extraction process for quality control ... · by microwave irradiation-assisted...
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Optimization of the extraction process for quality control of volatile oil obtained
from the fruit of Pterodon emarginatus (Fabaceae) occurrent on Brazilian Savana
G I U L I A N A V I L A V E R D E
J O S É R E A L I N O D E P A U L A
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Brazilian Biodiversity
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Cerrado – Great Savana
• Greatest hotspost of the world • 2 million square kilometers • Big reservation of water –
Aquífero Guarany • peculiar vegetation types
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Cerrado´s people...
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Source: Buzatti, 2011.
Pterodon emarginatus Vogel.= Pterodon pubescens Benth.
• Pterodon apparicioi Pedersoli • Pterodon abruptus Benth • Pterodon polygalaeflorus Benth
Sucupira-branca ou Faveiro
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Folk Medicine
Antinociceptive
Antimicrobial
Antioxidant
Anti-inflamatory
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•Aimed to optimize the volatile oil extraction process using microwave irradiation and analyze their chemical composition towards the establishment of quality control protocols of herbal drugs made by the fruit of Pterodon emarginatus (Fabaceae).
Objective
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Oscillatory and perpendicular fields that can provide better transference of energy!
Source: Kappe et al. (2009), adapted
ion conduction and dipole
rotation
Microwave
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• Central Composite Rotational Delineation (CCRD)
• Variables: time, humidity and power irradiation as 23
factorial design with center point and 13 experiments
Methods
Variables Levels
- 1 0 1
X1 21 30 39
X2 44 50 56
X3 220 250 280
Table 1: Real and coded levels of the independent variables in the volatile oil extraction process of sucupira’s fruit
X1= extraction time (min); X2= humidity (%); X3= power microwave irradiation (W)
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•Results were evaluate by Response Surface Methodology (RSM)
•Residue Analysis was performed at 95% confidence limit (p <0.05), which consisted of the significance test of model fit, based on the analysis of variance (ANOVA).
•Statistics and response surface graphs obtained through the Statistic for Windows version 10.0 of StatSoft (1984-2011).
•Analyze the volatile oil by GC-MS
Methods
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16º53'21 ''S 49º15'12''W 30 g
CG - MS
Shimadzu gas chromatograph model QP 2010 GC coupled to Ultra mass spectrometer: column RTX-5MS 30 cm, drag gas He.
Discovery SP and Clevenger
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Results
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MAE x Clevenger Medium Volume and Medium Yield
Volume (mL) Yield (% v/w)
Conventional method 1.80 3.60
Method microwave 1.73 5.76
50
500
240 261.62
30 13.2 39
3.31 0
100
200
300
400
500
Biomass Solvent Volume (ml) Time (minutes) Specific heatquantity (KJ)
Conventional method
Microwave method
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• 2.16% higher yield
• 6 times faster
• Almost ½ plant material
• 2.64% water
• 1/79 of the energy used in the Clevenger extraction.
MAE x Clevenger extraction
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Estimate of the effects of variables on the polynomial fit model of variation of the yield process (a) and extracted oil volume (b) versus time (X1), humidity (X2) and irradiation power (X3)
a b
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Figure 3 – Response surface showing the effect of extraction procedure on the performance variables (A,B,C) and oil volume (D,E,F)
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•Plant material amount used
•Type of solvent
•Proportion vegetable/solvent materials
•Bottle shape
•Distillation system coupled type
•Temperature
•Power
•Extraction time
Parameters that Influence the Microwave Assisted Techniques
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Chemical composition and rate of volatile oil obtained by microwave irradiation-assisted extraction (MAE) and conventional extraction (CE) of P. emarginatus fruits
RI Compound MAE Rate (%) CE Rate (%)
1436 ɣ-elemeno 1,16 7,02
1376 α-copaeno 3,54 1,05
1494 isocariofileno 25,65 6,75
1454 α-humuleno 4,92 2,49
1531 trans-α-bisabolol 6,24 --
1469 allo-aromadendrene 1,31 0,92
1523 sis-sesquisabineno 1,23 0,70
1479 ɣ-muuruleno 48,03 47,31
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•MAE can be an excellent substitute for CE;
• It can be performed on an industrial scale to produce with similar chemical profile, but more pure, free from artifacts;
•Required less biomass, significantly reduced the time of extraction, energy use, CO2 emissions and solvent;
•The method is more effective and bio-sustenaible (yield 2.6% v/top w) to CE.
Conclusions
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Namastê!
Specially thanks for the
researchers: Dr. Gilberto
Aquino, Diogo Amorim,
Dr. Danilo Martins and
Jaqueline Queiroz