Distillation Equipment Suitable for Centigram and Decigram Quantities

Gould, C. W.; Holzman, George; Niemann, Carl

doi:10.1021/ac60016a027

Cited by 39 publications

(8 citation statements)

References 11 publications

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“…The vacuum was then released through a drying tube, the condenser liquid replaced with room temperature alcohol, and the drop collected. [In some cases, the microstill of Gould et al (6) was used.] In this way three to five fractions were collected.…”

Section: Establishing Purity Of Compoundsmentioning

confidence: 99%

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Volatile Oil Constituents of Grapefruit Juice

Kirchner¹,

Miller²

1953

J. Agric. Food Chem.

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were determined in these two by means of the sensitive chromotropic acid test (2). The fresh and freshly canned juices contained 0.2 mg. of methanol per kg. of juice and the stored juice, 23 mg. per kg• Acids ac*dic material was found in the residue from the stripping column run of the stored juice and a small amount in the freshly canned juice, a sample of fresh juice was rechecked for the presence of volatile acids. The distillate from fresh grapefruit juice was neutral.The /)-phenylphenacyl esters obtained from the acids in the stripper residue of the stored juice were separated by chromatographic adsorption on silicic acid (74). The major portion of this was found to be the derivative of acetic acid, representing 23.3 mg. of acetic acid per kg. of juice. The melting point of the ester was 110-112°C. and a mixed melting point with /j-phenylphenacyl acetate

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Section: Establishing Purity Of Compoundsmentioning

confidence: 99%

“…" Compounds detected by fluorescein-bromine test unless otherwise indicated 6. Detected by fluorescence of compound.…”

mentioning

confidence: 99%

Volatile Oil Constituents of Grapefruit Juice

Kirchner¹,

Miller²

1953

J. Agric. Food Chem.

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show abstract

“…The ethereal solution was washed with water and dried, and the reaction products were distilled twice through a semimicro fractionating column. 22 The quantities of potassium and ammonium chloride in the deuterophenol experiments were increased to 3.04 g. and 8.5 g., respectively.…”

Section: Resultsmentioning

confidence: 99%