Open Access. Powered by Scholars. Published by Universities.®

Food Science Commons

Open Access. Powered by Scholars. Published by Universities.®

Journal

1991

Scanning electron microscopy

Articles 1 - 4 of 4

Full-Text Articles in Food Science

Microstructure And Firmness Of Labneh (High Solids Yoghurt) Made From Cow's, Goat's And Sheep's Milks By A Traditional Method Or By Ultrafiltration, A. Y. Tamime, M. Kalab, G. Davies, H. A. Mahdi Jan 1991

Microstructure And Firmness Of Labneh (High Solids Yoghurt) Made From Cow's, Goat's And Sheep's Milks By A Traditional Method Or By Ultrafiltration, A. Y. Tamime, M. Kalab, G. Davies, H. A. Mahdi

Food Structure

Two types of Labneh (high solids yoghurt) were made from goat's and sheep 's milk: (a) traditional style Labneh was produced by straining yoghurt in a cloth bag, and (b) UF Labneh was made by ultrafiltration (UF) of warm yoghurt. A portion of all products were smoothened by a passage through a lactic curd homogenizer. Irrespective of their origin , the Labneh samples contained 20.5-22.5% total solids (including minerals and un-metabolized lactose), 6.7-8.2% protein, and 7.8- 8.9% fat.

Homogenization markedly decreased firmness of the goat's and sheep's Labnehs and is therefore not re~ commended in industrial production . Firmness of …


Structure And Rheology Of Dairy Products: A Compilation Of References With Subject And Author Indexes, David N. Holcomb Jan 1991

Structure And Rheology Of Dairy Products: A Compilation Of References With Subject And Author Indexes, David N. Holcomb

Food Structure

No abstract provided.


Recent Developments In The Application Of X-Ray Microanalysis To The Study Of Food Systems, B. E. Brooker Jan 1991

Recent Developments In The Application Of X-Ray Microanalysis To The Study Of Food Systems, B. E. Brooker

Food Structure

Low temperature scanning electron microscopy in conjunction with X-ray microanalysis can be used to study not only the internal structure of intact bulk food systems but also the distribution of their constitutive chemical elements. However, the considerable practical problems that are usually encountered when performing X-ray analysis on frozen samples include: a) the controlled deposition of a good quality carbon film to prevent charging, b) producing digital elemental distribution maps of elements whose X-ray spectral energy peaks partially or completely overlap and c) controlling the plane of fracture through the specimen and ensuring that the resulting topography allows meaningful analysis …


Application Of Scanning Electron Microscopy And X-Ray Microanalysis To Investigate Corrosion Problems In Plain And Enamelled Three Piece Welded Food Cans, James E. Charbonneau Jan 1991

Application Of Scanning Electron Microscopy And X-Ray Microanalysis To Investigate Corrosion Problems In Plain And Enamelled Three Piece Welded Food Cans, James E. Charbonneau

Food Structure

Scanning Electron Microscopy (SEM) and X-Ray Microanalysis (EDS) have been used to investigate rapid detinning, pitting corrosion and cosmetic corrosion in plain tin plate food cans and pitting corrosion, underenamel corrosion, enamel flaking , sulfide black corrosion and stress corrosion cracking in enamelled food cans.

Through the use of SEM - EDS it was determined that (SnL a /FeK a) Y2 X -ray line intensities arc proportional to the tin coating weight on tinplate. The method was applied to a rapid detinning problem in canned grapefruit sections. The cause of the early corrosion failure was found to be reversed tinplate. …