Technical Portfolio

Susan Saji

Food Technologist

Ingredient Functionality Alternative Proteins Spray Drying & Encapsulation Emulsion Science Design of Experiments Pilot Scale

Projects

Three projects spanning bioactive encapsulation, protein characterisation and product formulation — from lab scale through to pilot and manufacturing trials.

01

Lycopene Encapsulation from Tomato By-Products

MSc Thesis — Wageningen University & Research

Sep 2023 – Mar 2024

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Spray Drying Encapsulation Emulsion Science HPLC Bioactive Stabilisation Pilot Scale

Developed a spray-dried lycopene ingredient from tomato processing waste, optimising isomerisation and microencapsulation for bioactive stability.

Objective

Tomato by-products contain up to five times more lycopene than pulp yet are largely discarded. This project developed a spray-dried lycopene ingredient from this waste stream, optimising thermal isomerisation conditions and evaluating microencapsulation as a stabilisation strategy for the more bioavailable cis isomer forms.

What I Did

  • Screened time and temperature conditions (100°C and 140°C, 1–3 hours) to optimise cis isomer formation, achieving 67% total cis content at 140°C for 1 hour.
  • Developed and compared two oil-in-water emulsion systems as encapsulation matrices: maltodextrin-gum arabic and maltodextrin-Tween 80.
  • Scaled emulsion systems to pilot-scale spray drying, producing powders with encapsulation yields of 25–36%.
  • Characterised powder properties and ran 28-day stability tests at 4°C, 25°C and 38°C using HPLC to monitor lycopene retention and isomer profile shifts.

Outcome

  • Maltodextrin-gum arabic encapsulate showed stable lycopene retention at 4°C and 25°C with no significant loss over 28 days.
  • Established clear links between thermal processing parameters, cis isomer formation and storage stability, providing a foundation for functional ingredient development from processing waste.

Technical Skills

AnalyticalHPLC, physicochemical analysis, water activity, colour measurement, shelf-life assessment
ProcessingEmulsion development, pilot-scale spray drying, encapsulation yield optimisation
Experimental DesignSystematic parameter screening, stability study design, comparative formulation evaluation
ReportingAcademic thesis write-up, technical documentation, data interpretation
02

TVP Characterisation & Plant-Based Meat Alternative Application

R&D Internship — Unilever Foods Innovation Centre, Netherlands

Mar 2024 – Aug 2024

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Protein Functionality Rheology NMR Texture Analysis DoE Sensory Evaluation JMP

Built a data-driven framework mapping TVP ingredient properties to plant-based meat alternative application outcomes, reducing trial-and-error in ingredient selection.

Objective

Selecting the right TVP variant for plant-based meat applications requires understanding how raw ingredient properties translate into final product performance. This project developed a systematic framework to map ingredient characteristics to plant-based meat alternative application outcomes.

What I Did

  • Characterised multiple TVP variants across sizes and formats, evaluating water uptake, water distribution (NMR), texture and morphology as ingredient-level properties.
  • Produced samples for plant-based meat alternative application trials under controlled conditions and evaluated juiciness, hardness, cooking loss and sensory performance.
  • Analysed the full dataset in JMP using multivariate approaches to build a structured property map connecting ingredient characteristics to final product outcomes.

SOP Development — Image Analysis Equipment

  • Developed a full SOP for a newly introduced image analysis instrument, covering measurement method, data selection and analysis parameters from scratch.
  • Each trial generated 200+ data points; designed a step-by-step filtering and interpretation approach to produce reproducible, meaningful results.

Technical Skills

AnalyticalRheology, NMR, texture profile analysis, sensory evaluation, image analysis
Data & ReportingDoE, multivariate analysis in JMP, property mapping, technical reporting
Application TrialsBurger patty development, cooking loss measurement, ingredient performance evaluation
DocumentationSOP development, data protocol standardisation, equipment qualification
03

Emulsion & Instant Product Development

Product Development Trainee — Symega Food Ingredients, India

Aug 2021 – May 2022

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Emulsion Stability Dehydration Technology Formulation Pilot Scale Shelf-Life Testing Scale-Up

Independent formulation work across emulsion-based products, dehydrated instant ingredients and seasonings, from lab trials through to manufacturing scale.

Overview

This role covered formulation development across savoury categories including emulsion-based products, dehydrated instant ingredients and spice seasonings. Work spanned from initial concept and lab trials through pilot-scale validation and manufacturing transfer, with direct involvement in troubleshooting and process optimisation at each stage.

Dehydrated Instant Breakfast — Independent Project

  • Led development of a dehydrated instant breakfast ingredient from scratch, with no prior reference product existing in the company.
  • Resolved early challenges around solubility and dispersion through iterative formulation trials.
  • Optimised drying time-temperature parameters across multiple trial cycles, achieving target moisture content, solubility and shelf-life stability, and receiving sensory approval.

Flavoured Mayonnaise — Emulsion Stability Challenge

  • Worked on resolving phase separation issues across four flavoured mayonnaise variants through formulation and process adjustments.
  • Identified a recurring disconnect between lab-scale stability and pilot-scale behaviour, and adapted both formulation and process approach to resolve it.
  • Resolved instability in the majority of variants through ingredient substitution, emulsifier adjustments and process condition changes.

Technical Skills

FormulationEmulsion-based products, instant ingredients, spice seasonings and sauce development
Process OptimisationPilot-scale trials, hot-fill processing, retort processing, manufacturing-scale validation
Quality & StabilityAccelerated shelf-life testing, sensory evaluation, stability troubleshooting
Cross-functional WorkCollaboration with Production and Quality teams across trials and recipe transfer

Education

MSc Food Technology

Wageningen University & Research

Specialisation: Product Design & Ingredient Functionality

Sep 2022 – Aug 2024 · Netherlands

BEng (Hons) Food Technology

APJ Abdul Kalam Technological University

GPA: 9.0 / 10

Sep 2017 – Jul 2021 · India