APPLICATION OF RAMAN SPECTROSCOPY FOR THE CHARACTERISATION OF MILK AND MILK-PHENOLICS POWDERS
Аутори
Milinčić, DanijelKolašinac, Stefan
Kostić, Aleksandar
Lević, Steva
Salević, Ana
Nedović, Viktor
Pešić, Mirjana
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The current trend of food innovations is a development of different milk products enriched with phenolic compounds extracted from food by-products. This represents a promising strategy for food waste recovery and to enhance the beneficial health effects of milk-based functional foods. As one of the promising food ingredients can be skim goat milk enriched with grape pomace seed extract due to improved antioxidant properties of goat milk proteins. So, the aim of this study was the Raman analysis of spray-dried powders of skim goat milk, heated goat milk, and heated goat milk enriched with different concentrations of grape pomace seed extract. The whole statistical procedure (pre-processing and PCA) of Raman spectra was performed independently at Amide I (1700-1600 cm-1), Amide II (1600-1500cm-1), and Amide III (1500-1200cm-1) regions. Raman spectra analysis of amide I and II regions showed a separation between heated and unheated milk due to the loadings for 1650-1653 (α-helix), 1661-16...63, 1675, and 1686 cm-1 (turn). Furthermore, in the amide I region, the differences between milk enriched with different concentrations of grape pomace seed extract can be observed due to loadings for wavenumbers in the 1612-1644 cm-1 region. These differences can be related to the changes in the parallel and antiparallel β-sheet structures, differences in the vibrations of the amino acid residues of tyrosine, tryptophan, and phenylalanine and the vibrations of ν(C=C) bonds from the aromatic ring of free flavan-3-ols (catechin, epicatechin, epigallocatechin). For the amide III region, the applied heat treatment and interactions of proteins with phenolic compounds distinguished samples in loadings for wavenumber in 1236-1257 and 1267-1304 cm-1 ranges. These differences can be related to the changes in the α-helix and random coil structures. It can be concluded that PCA separation of analyzed powders in amide I and III regions of Raman spectra caused by the applied thermal treatment, presence of free phenolic compounds, and protein-phenolics interactions, can be used for the characterization of milk and milk-phenolics powders.
Кључне речи:
Goat milk proteins / Grape pomace seed / Phenolic compounds / Raman spectroscopy / InteractionsИзвор:
Book of Abstracts of the 2nd International Conference on Advanced Production and Processing (ICAPP), 2022, 98-Издавач:
- University of Novi Sad, Faculty of Technology Novi Sad
Финансирање / пројекти:
- FUNPRO - Functional products based on goat's milk proteins and bioactive compounds extracted from grape pomace and edible mushrooms (RS-ScienceFundRS-Ideje-7744714)
Институција/група
Poljoprivredni fakultetTY - CONF AU - Milinčić, Danijel AU - Kolašinac, Stefan AU - Kostić, Aleksandar AU - Lević, Steva AU - Salević, Ana AU - Nedović, Viktor AU - Pešić, Mirjana PY - 2022 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/6870 AB - The current trend of food innovations is a development of different milk products enriched with phenolic compounds extracted from food by-products. This represents a promising strategy for food waste recovery and to enhance the beneficial health effects of milk-based functional foods. As one of the promising food ingredients can be skim goat milk enriched with grape pomace seed extract due to improved antioxidant properties of goat milk proteins. So, the aim of this study was the Raman analysis of spray-dried powders of skim goat milk, heated goat milk, and heated goat milk enriched with different concentrations of grape pomace seed extract. The whole statistical procedure (pre-processing and PCA) of Raman spectra was performed independently at Amide I (1700-1600 cm-1), Amide II (1600-1500cm-1), and Amide III (1500-1200cm-1) regions. Raman spectra analysis of amide I and II regions showed a separation between heated and unheated milk due to the loadings for 1650-1653 (α-helix), 1661-1663, 1675, and 1686 cm-1 (turn). Furthermore, in the amide I region, the differences between milk enriched with different concentrations of grape pomace seed extract can be observed due to loadings for wavenumbers in the 1612-1644 cm-1 region. These differences can be related to the changes in the parallel and antiparallel β-sheet structures, differences in the vibrations of the amino acid residues of tyrosine, tryptophan, and phenylalanine and the vibrations of ν(C=C) bonds from the aromatic ring of free flavan-3-ols (catechin, epicatechin, epigallocatechin). For the amide III region, the applied heat treatment and interactions of proteins with phenolic compounds distinguished samples in loadings for wavenumber in 1236-1257 and 1267-1304 cm-1 ranges. These differences can be related to the changes in the α-helix and random coil structures. It can be concluded that PCA separation of analyzed powders in amide I and III regions of Raman spectra caused by the applied thermal treatment, presence of free phenolic compounds, and protein-phenolics interactions, can be used for the characterization of milk and milk-phenolics powders. PB - University of Novi Sad, Faculty of Technology Novi Sad C3 - Book of Abstracts of the 2nd International Conference on Advanced Production and Processing (ICAPP) T1 - APPLICATION OF RAMAN SPECTROSCOPY FOR THE CHARACTERISATION OF MILK AND MILK-PHENOLICS POWDERS SP - 98 UR - https://hdl.handle.net/21.15107/rcub_agrospace_6870 ER -
@conference{ author = "Milinčić, Danijel and Kolašinac, Stefan and Kostić, Aleksandar and Lević, Steva and Salević, Ana and Nedović, Viktor and Pešić, Mirjana", year = "2022", abstract = "The current trend of food innovations is a development of different milk products enriched with phenolic compounds extracted from food by-products. This represents a promising strategy for food waste recovery and to enhance the beneficial health effects of milk-based functional foods. As one of the promising food ingredients can be skim goat milk enriched with grape pomace seed extract due to improved antioxidant properties of goat milk proteins. So, the aim of this study was the Raman analysis of spray-dried powders of skim goat milk, heated goat milk, and heated goat milk enriched with different concentrations of grape pomace seed extract. The whole statistical procedure (pre-processing and PCA) of Raman spectra was performed independently at Amide I (1700-1600 cm-1), Amide II (1600-1500cm-1), and Amide III (1500-1200cm-1) regions. Raman spectra analysis of amide I and II regions showed a separation between heated and unheated milk due to the loadings for 1650-1653 (α-helix), 1661-1663, 1675, and 1686 cm-1 (turn). Furthermore, in the amide I region, the differences between milk enriched with different concentrations of grape pomace seed extract can be observed due to loadings for wavenumbers in the 1612-1644 cm-1 region. These differences can be related to the changes in the parallel and antiparallel β-sheet structures, differences in the vibrations of the amino acid residues of tyrosine, tryptophan, and phenylalanine and the vibrations of ν(C=C) bonds from the aromatic ring of free flavan-3-ols (catechin, epicatechin, epigallocatechin). For the amide III region, the applied heat treatment and interactions of proteins with phenolic compounds distinguished samples in loadings for wavenumber in 1236-1257 and 1267-1304 cm-1 ranges. These differences can be related to the changes in the α-helix and random coil structures. It can be concluded that PCA separation of analyzed powders in amide I and III regions of Raman spectra caused by the applied thermal treatment, presence of free phenolic compounds, and protein-phenolics interactions, can be used for the characterization of milk and milk-phenolics powders.", publisher = "University of Novi Sad, Faculty of Technology Novi Sad", journal = "Book of Abstracts of the 2nd International Conference on Advanced Production and Processing (ICAPP)", title = "APPLICATION OF RAMAN SPECTROSCOPY FOR THE CHARACTERISATION OF MILK AND MILK-PHENOLICS POWDERS", pages = "98", url = "https://hdl.handle.net/21.15107/rcub_agrospace_6870" }
Milinčić, D., Kolašinac, S., Kostić, A., Lević, S., Salević, A., Nedović, V.,& Pešić, M.. (2022). APPLICATION OF RAMAN SPECTROSCOPY FOR THE CHARACTERISATION OF MILK AND MILK-PHENOLICS POWDERS. in Book of Abstracts of the 2nd International Conference on Advanced Production and Processing (ICAPP) University of Novi Sad, Faculty of Technology Novi Sad., 98. https://hdl.handle.net/21.15107/rcub_agrospace_6870
Milinčić D, Kolašinac S, Kostić A, Lević S, Salević A, Nedović V, Pešić M. APPLICATION OF RAMAN SPECTROSCOPY FOR THE CHARACTERISATION OF MILK AND MILK-PHENOLICS POWDERS. in Book of Abstracts of the 2nd International Conference on Advanced Production and Processing (ICAPP). 2022;:98. https://hdl.handle.net/21.15107/rcub_agrospace_6870 .
Milinčić, Danijel, Kolašinac, Stefan, Kostić, Aleksandar, Lević, Steva, Salević, Ana, Nedović, Viktor, Pešić, Mirjana, "APPLICATION OF RAMAN SPECTROSCOPY FOR THE CHARACTERISATION OF MILK AND MILK-PHENOLICS POWDERS" in Book of Abstracts of the 2nd International Conference on Advanced Production and Processing (ICAPP) (2022):98, https://hdl.handle.net/21.15107/rcub_agrospace_6870 .