Structure and morphology ofβ-crystals of glyceryl tristearate

Skoda, W.; Hoekstra, L.L.; Soest, T. C. van; Bennema, P.; Tempel, M. van den

doi:10.1007/bf02086203

Cited by 26 publications

(18 citation statements)

References 3 publications

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“…and -TTT (Table 10). Nevertheless, the calculated cell parameters of -SSS deviate only slightly from those determined by Skoda et al (1967). Nevertheless, the calculated cell parameters of -SSS deviate only slightly from those determined by Skoda et al (1967).…”

Section: Crystal Structure Predictioncontrasting

confidence: 53%

“…Using this method it was possible to determine the alkyl chains of -LLL. Skoda et al (1967) determined unit-cell parameters of -SSS from single-crystal Weissenberg photographs. Later, Larsson (1965) presented the crystal structure of -LLL, re®ned to an R value of 0.20.…”

Section: Introductionmentioning

confidence: 99%

“…a) Determined from Guinier data; (b)Skoda et al (1967); (c)De Jong & Van Soest (1978); (d)Simpson & Hagemann (1975).…”

mentioning

confidence: 99%

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Structure of mono-acid even-numbered β-triacylglycerols

Langevelde¹,

Malssen²,

Hollander

et al. 1999

Acta Crystallogr Sect B

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The crystal structure of the beta polymorph of tripalmitin (1,2,3-trihexadecanoylglycerol, beta-PPP) has been determined by single-crystal X-ray diffraction. The molecules crystallize in space group P1; in an asymmetric tuning-fork conformation. This structure and the already-known crystal structures of beta-tricaprin (beta-CCC) and beta-trilaurin (beta-LLL) could be matched in an overlap model. Apart from a difference in chain length, the three structures are almost identical. The overlap model can be used to predict the crystal structure of the other members of the C(n)C(n)C(n)-type (n = even) TAG series reasonably accurately. This is demonstrated by predicting the crystal structure for beta-trimyristin (beta-MMM) and successively comparing the experimental and calculated X-ray powder diagrams.

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Section: Crystal Structure Predictioncontrasting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

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Structure of mono-acid even-numbered β-triacylglycerols

Langevelde¹,

Malssen²,

Hollander

et al. 1999

Acta Crystallogr Sect B

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“…Re®ned values from Langevelde et al, 1999a); predicted values from the overlap model; third column, literature values after transformation from Skoda et al (1967); fourth column, literature values after transformation from De Jong & Van Soest (1978).…”

Section: Research Papersmentioning

confidence: 99%

“…In this paper the structures of -1,2,3-tritetradecanoylglycerol (-trimyristin or -MMM) and -1,2,3-trioctadecanoylglycerol (-tristearin or -SSS) are presented. Both are members of the -stable C n C n C n -type (n = even) TAG series for which the abovementioned predictive model was built and for which only unitcell parameters were available (-MMM in Van Langevelde et al, 1999a; -SSS in Skoda et al, 1967;De Jong & Van Soest, 1978). The structures of -MMM and -SSS were determined from high-resolution synchrotron XRPD data, illustrating the appropriate use of the -C n C n C n -type (n = even) series' homology.…”

Section: Introductionmentioning

confidence: 99%

Structure of β-trimyristin and β-tristearin from high-resolution X-ray powder diffraction data

Langevelde¹,

Peschar

Schenk

2001

Acta Crystallogr B Struct Sci

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The crystal structures of beta-1,2,3-tritetradecanoylglycerol (beta-trimyristin or beta-MMM) and beta-1,2,3-trioctadecanoylglycerol (beta-tristearin or beta-SSS) have been determined from high-resolution synchrotron X-ray powder diffraction data. Grid search and Rietveld refinement have been used to determine and refine the structure, respectively. Both substances crystallize in space group P1; with Z = 2. The unit-cell parameters for beta-MMM are a = 12.0626 (6), b = 41.714 (1), c = 5.4588 (3) A, alpha = 73.388 (4), beta = 100.408 (5) and gamma = 118.274 (4) degrees. For beta-SSS the unit-cell parameters are a = 12.0053 (7), b = 51.902 (2), c = 5.4450 (3) A, alpha = 73.752 (5), beta = 100.256 (6) and gamma = 117.691 (5) degrees. Soft-distance restraints have been applied to the molecules during refinement. For beta-MMM the final R(p) value obtained is 0.053 and for beta-SSS the final R(p) value is 0.041.

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Über die Kristallstruktur der Kakaobutter

Witzel¹,

Becker²

1969

Fette, Seifen, Anstrichm.

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In der Literatur werden 6 Kristallmodifikationen der Kakaobutter beschrieben, von denen jedoch nur die Vor‐Beta‐ und die Beta‐Form für die Technologie der Schokoladenherstellung von Interesse sind. Die Aufklärung der Kristallstruktur der genannten beiden Modifikationen ist deshalb schwierig, weil sich von Kakaobutter keine Einkristalle nennenswerter Größe züchten lassen. Es wird gezeigt, daß eine Strukturanalyse mit Hilfe von Röntgenbeugungsaufnahmen an mikrokristallinen Präparaten mit und ohne Textur sowie von Vergleichen mit bekannten Strukturen einsäuriger Triglyceride trotzdem möglich ist. Die Gitterparameter und die Molekülanordnung der Vor‐Beta‐ und der Beta‐Form werden angegeben.

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Structure and morphology ofβ-crystals of glyceryl tristearate

Cited by 26 publications

References 3 publications

Structure of mono-acid even-numbered β-triacylglycerols

Structure of mono-acid even-numbered β-triacylglycerols

Structure of β-trimyristin and β-tristearin from high-resolution X-ray powder diffraction data

Über die Kristallstruktur der Kakaobutter

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