Cited by 24Proteins in Food SystemsFood and Agricultural SciencesAdvanced Scientific Research Methods

New insight on crystal and spot development in hard and extra-hard cheeses: Association of spots with incomplete aggregation of curd granules

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D’Incecco, P., Limbo, S., Faoro, F., Hogenboom, J., Rosi, V., Morandi, S., Pellegrino, L.·2016·Journal of Dairy Science

Abstract

Chemical composition and structure of different types of macroparticles (specks, spots) and microparticles (microcrystals) present in hard and extra-hard cheeses were investigated. Light microscopy revealed that the small hard specks had the structure of crystalline tyrosine, as confirmed by amino acid analysis. Spots showed a complex structure, including several curd granules, cavities, and microcrystals, and were delimited by a dense protein layer. Spots contained less moisture and ash than the adjacent cheese area, and more protein, including significantly higher contents of valine, methionine, isoleucine, leucine, tyrosine, and phenylalanine. Microcrystals were observed by light and electron microscopy and analyzed by confocal micro-Raman. Among others, calcium phosphate crystals appeared to consist of a central star-shaped structure immersed in a matrix of free fatty acids plus leucine and phenylalanine in free form or in small peptides. A hypothetical mechanism for the formation of these structures has been formulated.

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Registry

Crossref · 10.3168/jds.2016-11050

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Authors
D’Incecco, P., Limbo, S., Faoro, F., Hogenboom, J., Rosi, V., Morandi, S., & Pellegrino, L.
Affiliations
  • University of Milan (IT)
  • National Research Council (IT)
Corresponding author
D’Incecco, P.
Venue
Journal of Dairy Science
Published
2016-08
Volume
99
Issue
8
Pages
6144-6156
ISSN
0022-0302 (ISSN-L)
OpenAlex
W2394758117
Cited by
24
References
31
Citations by year
2026: 2 · 2025: 2 · 2023: 2 · 2022: 4 · 2021: 4 · 2020: 4 · 2019: 2 · 2018: 2 · 2017: 2
FWCI
2.52
Type
journal article
Language
en
Open access
Locations
  • Journal of Dairy Science (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano) (submittedVersion, other-oa)
  • INFM-OAR (INFN Catania) (submittedVersion, other-oa)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Proteins in Food Systems
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Food and Agricultural Sciences
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Advanced Scientific Research Methods
Keywords
hard cheese, calcium phosphate crystals, microcrystals, protein composition, amino acid composition, free fatty acids
MeSH terms
Amino Acids, Animals, Calcium Phosphates, Cheese, Crystallization, Fatty Acids, Nonesterified, Food Handling, Microscopy, Electron, Milk Proteins, Microscopy, Confocal

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