Ulrike Böcker
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View article: From laboratory to industrial use: Understanding process variation during enzymatic protein hydrolysis with dry film fourier-transform infrared spectroscopy
From laboratory to industrial use: Understanding process variation during enzymatic protein hydrolysis with dry film fourier-transform infrared spectroscopy Open
Industries are continuously looking for dedicated sensor solutions for evaluating the chemical composition of products that can provide valuable insights into process control, process optimization, and product quality. A rapid and robust a…
View article: Dietary intake of micronized avian eggshell membrane in aged mice reduces circulating inflammatory markers, increases microbiota diversity, and attenuates skeletal muscle aging
Dietary intake of micronized avian eggshell membrane in aged mice reduces circulating inflammatory markers, increases microbiota diversity, and attenuates skeletal muscle aging Open
Introduction Avian eggshell membrane (ESM) is a complex extracellular matrix comprising collagens, glycoproteins, proteoglycans, and hyaluronic acid. We have previously demonstrated that ESM possesses anti-inflammatory properties in vitro …
View article: The role of biospectroscopy and chemometrics as enabling technologies for upcycling of raw materials from the food industry
The role of biospectroscopy and chemometrics as enabling technologies for upcycling of raw materials from the food industry Open
It is important to utilize the entire animal in meat and fish production to ensure sustainability. Rest raw materials, such as bones, heads, trimmings, and skin, contain essential nutrients that can be transformed into high-value products.…
View article: FTIR-based prediction of collagen content in hydrolyzed protein samples
FTIR-based prediction of collagen content in hydrolyzed protein samples Open
Fourier transform infrared spectroscopy (FTIR) is a powerful analytical tool that has been used for protein and peptide characterization for decades. In the present study, the objective was to investigate if FTIR can be used to predict col…
View article: Low-cost, mass-producible nanostructured surface on flexible substrate with ultra-thin gold or silver film for SERS applications
Low-cost, mass-producible nanostructured surface on flexible substrate with ultra-thin gold or silver film for SERS applications Open
Surface Enhanced Raman Spectroscopy has emerged as a powerful analytical technique for fingerprint recognition of molecular samples with high sensitivity. The Surface Enhanced Raman Scattering (SERS) effect has been extensively studied for…
View article: Fourier-transform infrared spectroscopy for characterization of liquid protein solutions: A comparison of two sampling techniques
Fourier-transform infrared spectroscopy for characterization of liquid protein solutions: A comparison of two sampling techniques Open
Whereas industrial laboratory systems for Fourier-Transform Infrared (FTIR) spectroscopic characterization have been available for decades, dedicated FTIR solutions for in-line process control or for industrial at-line analysis of protein …
View article: Effect of Citric Acid Cross Linking on the Mechanical, Rheological and Barrier Properties of Chitosan
Effect of Citric Acid Cross Linking on the Mechanical, Rheological and Barrier Properties of Chitosan Open
In this study, acetic acid (AA-2% w/v), a combination of acetic acid and citric acid (AA-1% w/v + CA-1% w/w), and three different concentrations of citric acid (CA-2, 4 and 6% w/w) were used to create chitosan solution. The FTIR analysis s…
View article: Post-enzymatic hydrolysis heat treatment as an essential unit operation for collagen solubilization from poultry by-products
Post-enzymatic hydrolysis heat treatment as an essential unit operation for collagen solubilization from poultry by-products Open
Enzymatic protein hydrolysis (EPH) is an invaluable process to increase the value of food processing by-products. In the current work the aim was to study the role of standard thermal inactivation in collagen solubilization during EPH of p…
View article: The effect of adding eggshell membrane to emulsified meat models with reduced salt in terms of structure, water-holding, and texture
The effect of adding eggshell membrane to emulsified meat models with reduced salt in terms of structure, water-holding, and texture Open
This study was conducted to evaluate the effect of adding eggshell membrane (ESM), a by-product of the chicken egg processing industry, to emulsified meat models with different NaCl concentrations. The aim was to see if ESM could help redu…
View article: Effects of poultry raw material variation and choice of protease on protein hydrolysate quality
Effects of poultry raw material variation and choice of protease on protein hydrolysate quality Open
The aim of this study was to investigate the role of compositional variations in side-streams from the chicken and turkey industry on product characteristics after enzymatic protein hydrolysis (EPH). Variation was obtained using four raw m…
View article: Improved estimation of in vitro protein digestibility of different foods using size exclusion chromatography
Improved estimation of in vitro protein digestibility of different foods using size exclusion chromatography Open
While the harmonized INFOGEST model provides a physiologically relevant platform for simulated digestion, it needs to be combined with adequate analytical methods to enable quantification and comparison of protein digestibility in differen…
View article: Characterization of Collagen Structure in Normal, Wooden Breast and Spaghetti Meat Chicken Fillets by FTIR Microspectroscopy and Histology
Characterization of Collagen Structure in Normal, Wooden Breast and Spaghetti Meat Chicken Fillets by FTIR Microspectroscopy and Histology Open
Recently, two chicken breast fillet abnormalities, termed Wooden Breast (WB) and Spaghetti Meat (SM), have become a challenge for the chicken meat industry. The two abnormalities share some overlapping morphological features, including myo…
View article: Magnetic ligand fishing using immobilized DPP-IV for identification of antidiabetic ligands in lingonberry extract
Magnetic ligand fishing using immobilized DPP-IV for identification of antidiabetic ligands in lingonberry extract Open
In this work, a new magnetic ligand fishing probe for discovery of DPP-IV inhibitory ligands was developed and it was tested as a proof of concept on the fruit extract of Vaccinium vitis-idaea (lingonberry). The ligands were shown to have …
View article: Characterization of Collagen Structure in Normal, Wooden Breast and Spaghetti Meat Chicken Fillets by FTIR Microspectroscopy and Histology
Characterization of Collagen Structure in Normal, Wooden Breast and Spaghetti Meat Chicken Fillets by FTIR Microspectroscopy and Histology Open
Recently, two chicken breast fillet abnormalities, termed Wooden Breast (WB) and Spaghetti Meat (SM), have become a challenge for the chicken meat industry. The two abnormalities share some overlapping morphological features, including myo…
View article: Microdochium majus and other fungal pathogens associated with reduced gluten quality in wheat grain
Microdochium majus and other fungal pathogens associated with reduced gluten quality in wheat grain Open
The bread-making quality of wheat depends on the viscoelastic properties of the dough in which gluten proteins play an important role. The quality of gluten proteins is influenced by the genetics of the different wheat varieties and enviro…
View article: Fourier-transform infrared spectroscopy for monitoring proteolytic reactions using dry-films treated with trifluoroacetic acid
Fourier-transform infrared spectroscopy for monitoring proteolytic reactions using dry-films treated with trifluoroacetic acid Open
In this study we explore the potential of using Fourier-transform infrared (FTIR) spectra of trifluoroacetate-protein and peptide complexes for monitoring proteolytic reactions. The idea of treating dry-films of protein hydrolysates with t…
View article: Environmental factors associated with glutenin polymer assembly during grain maturation
Environmental factors associated with glutenin polymer assembly during grain maturation Open
This study aims to understand the environmental factors, focusing on rain and fungal infection, affecting the assembly of glutenin polymers during grain maturation. Spring wheat was grown in the field and grains were sampled from 50% grain…
View article: FTIR-based hierarchical modeling for prediction of average molecular weights of protein hydrolysates
FTIR-based hierarchical modeling for prediction of average molecular weights of protein hydrolysates Open
In the presented study, Fourier-transform infrared (FTIR) spectroscopy is used to predict the average molecular weight of protein hydrolysates produced from protein-rich by-products from food industry using commercial enzymes. Enzymatic pr…
View article: The use of Fourier‐transform infrared spectroscopy to characterize connective tissue components in skeletal muscle of Atlantic cod (<i>Gadus morhua</i> L.)
The use of Fourier‐transform infrared spectroscopy to characterize connective tissue components in skeletal muscle of Atlantic cod (<i>Gadus morhua</i> L.) Open
In the present study, Fourier‐transform infrared spectroscopy (FTIR) is investigated as a method to measure connective tissue components that are important for the quality of Atlantic cod filets (Gadus morhua L.) . The Atlantic cod used in…