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Extraction of Limonene from Orange Peels Through Steam Distillation

Conclusion

Recommendations

- Run analysis right away

- Grapefruits, lemons, limes

Questions

Analysis of Product

Buffer

Refractive Indices

Analysis of Product

Citrate Buffer (pH 4.95)

Phosphate Buffer (pH 6.86) 1.3323 - 1.3360

Water (pH 7.42)

Phosphate Buffer (pH 7.90) 1.470-1.474

IR Spectra

Percent Yield

Reference:

Limonene - 1.4730

Water - 1.34

IR Spectrum of Product from Citrate Buffers,

Phosphate Buffer (pH 6.86), & Water Trials

IR Spectrum of Water (Reference)

IR Spectrum of Product from Phosphate Buffer (pH 7.90) Trials

IR Spectrum of Limonene (CRM)

Citrate Buffer (pH 4.95) 54%

Citrate Buffer (pH 5.82) 33%

Phosphate Buffer (pH 6.86) 1.2%

Phosphate Buffer (pH 7.90) 0.91%

Water (pH 7.42) 2.9%

Buffers

Citrate Buffer Solution pH 4.95

Citrate Buffer Solution pH 5.82

Phosphate Buffer Solution pH 6.86

Phosphate Buffer Solution pH 7.90

Water pH 7.42

Background

Limonene

- essential oil from citrus fruits

Steam Distillation

- separation method

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