相关实验视频

Updated: Sep 18, 2025

Author Spotlight: Advancements in X-ray CT Tool Chain for Tree Core Analysis

Author Spotlight: Advancements in X-ray CT Tool Chain for Tree Core Analysis

Published on: September 22, 2023

从乳制品到植物产品:用X射线了解它们的结构指纹

Eleonora Olsmats¹, Adrian R Rennie²

¹Macromolecular Chemistry, Department of Chemistry - Ångström, Uppsala University, Box 538, 75121, Uppsala, Sweden. Eleonora.Olsmats@kemi.uu.se.

NPJ science of food

|June 23, 2025

概括

这项研究使用X射线散射分析分析了基于植物的牛奶替代品,揭示了与乳制品相比的结构差异. 了解这些结构有助于优化植物性食品配方,以获得更好的质地和功能.

科学领域:

食品科学食品科学食品科学
材料科学材料科学材料科学
类风病学类风病学类风病学

背景情况:

由于健康,过敏原和可持续性问题,消费者对植物性替代品的需求日益增加.
与乳制品相比,植物性产品的微观结构和质学的理解有限.
需要对不同植物来源和品牌进行比较研究.

研究的目的:

分析商业植物性牛奶,酸奶和奶油替代品与乳制品的结构指纹.
将结构特征与组成 (脂肪,碳水化合物) 和功能性质 (粘度,化行为) 相关联.
建立解释散射数据和优化植物配方的基础.

主要方法:

使用超小,小和广角X射线散射 (USAXS,SAXS,WAXS) 进行多长度尺度结构特征.
使用光散射来确认与脂肪含量相关的尺寸趋势,并识别非脂质结构.
开发了用于数据解释和潜在AI分析的结构性指纹图.

主要成果:

从大型油滴到碳水化合物/蛋白质网络和糖晶体相的特征结构.
相关联的USAXS强度与脂肪含量和SAXS强度与碳水化合物含量.
在植物性替代品中观察到不同的结构特征,包括更大的非脂质结构.

结论:

分散技术为植物性食品替代品的结构功能关系提供了关键的见解.
结构指纹有助于理解和优化制定所需的特性,如粘度和化行为.
这项研究突出了分散方法在推进食品结构研究和产品设计方面的潜力.

更多相关视频

$X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects$ 09:16

X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects

Published on: June 8, 2016

$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$ 10:12

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

相关概念视频

$X-ray Diffraction of Biological Samples$ 01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...

X-ray Crystallography

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...

X-ray Imaging

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...