Classification of Glyceride Crystal Forms.

Blending of mango kernel fat and palm oil mid-fraction to obtain cocoa butter equivalent

“…The diffraction patterns of the fat obtained during 1 h of solidification contained three peaks at 3.88 Å, 4.20 Å and 4.38 Å. The two former peaks could be related to β′ form (Larsson 1966) and the latter peak was close to that of pseudo-β′ structure (Gibon et al 1986). Unlike MKF, the predominant structure of PMF during 1 h of crystallization appeared to be pseudo-β′.…”

“…5a) obtained during 60 min of static isothermal crystallization at 20°C exhibited diffraction characteristics of more than one crystal structure, with four main diffraction peaks in WAXS at 3.86 Å, 4.20 Å, 4.38 Å and 4.55 Å and one diffraction peak with low scattering intensity at 3.60 Å. The peaks at 3.86 Å and 4.20 Å were typical diffraction patterns of β′ structure (Larsson 1966). The two peaks showed the strongest scattering intensity, implying that β′ was the predominant polymorph for MKF solidified under these conditions.…”

“…The diffraction peak at 4.38 Å was close to that of pseudo-β′ form as reported by Gibon et al (1986) whilst the one at 3.60 Å could be associated with the sub-β structure (D'Souza et al 1990). The 4.55 Å peak was a typical main diffraction peak in WAXS of the β structure of fats (Larsson 1966). The x-ray diffraction patterns of MKF indicated that the fat crystallized into a mixture of these polymorphs throughout 1 h of crystallization.…”

Characterization of Physicochemical and Thermal Properties and Crystallization Behavior of Krabok (Irvingia Malayana) and Rambutan Seed Fats

“…The diffraction peak at 4.55 Å corresponded to β structure 28 . At 7 days, the diffraction profile showed one dominating diffraction peak at 4.60 Å, a typical diffraction pattern of β structure 27 . This suggested that polymorphic transition had taken place between 1 and 7 days of the crystallization time.…”

Characterization of Lipid Nanostructures using DSC coupled to SAXS and WAXS

“…The three main types of polymorphic crystal forms in TG are the alpha (D), beta prime (E') and beta (E) forms, in the order of their increasing stability. They have been related to different subcells some of them have been described in detail [14][15][16][17][18][19][20][21][22][23] Transitions between these three major polymorphic varieties are irreversible. Monotropism implies that they are only possible via a liquid and when leading to the formation of more stable species.…”