Detecting concentrations of milk components by an iterative optical technique

Area of Science:

• Biophotonics
• Optical Physics
• Food Science

Background:

• Accurate characterization of participating media scattering properties is crucial for various applications.
• Existing methods for optical property reconstruction can be complex and limited.
• Developing non-invasive techniques for monitoring food composition is of significant interest.

Purpose of the Study:

• To introduce a generalized Gerchberg-Saxton (G-S) algorithm for reconstructing scattering properties of participating media.
• To develop a novel appearance model for milk based on its optical properties.
• To demonstrate the potential for quantitative analysis of milk components using optical measurements.

Main Methods:

• Theoretical and practical model based on a generalized Gerchberg-Saxton (G-S) algorithm.
• Estimation of reduced scattering coefficient (μ's) from the standard deviation (STD) of retrieved light phase.
• Experimental measurements on milk components (whey protein, sodium caseinate, lactose) at varying concentrations.

Main Results:

• The standard deviation (STD) of the retrieved phase directly correlates with the optical properties of the samples.
• A novel milk appearance model was derived, parameterized by lactose and protein content.
• Quantitative signatures of lactose and milk proteins were detected using the G-S optical tool.

Conclusions:

• The generalized G-S algorithm is effective for reconstructing scattering properties.
• The developed optical method shows promise for quantitative monitoring of milk composition.
• This research paves the way for designing novel, non-invasive milk-content-monitoring tools.