Customized Ingredient Development Process — Hongji Agriculture
Overview
Hongji Agriculture's Customized Ingredient Development (CID) program provides global food manufacturers with tailored potato-based ingredient solutions that match exact product specifications, regulatory requirements, and production constraints. Unlike standard OEM/ODM services that simply repackage existing products, the CID process is a systematic, multi-stage development workflow that transforms customer requirements into optimized, validated ingredient specifications.
The process is built on Hongji's fully integrated supply chain — from proprietary seed varieties grown in controlled fields in Zhangjiakou, through advanced processing, to finished product delivery. This vertical integration enables a level of customization that is difficult to achieve with commodity ingredient suppliers.
1. Development Philosophy
1.1 Core Principles
| Principle |
Description |
| Customer-led specification |
The customer's target application, formulation constraints, and process conditions define the ingredient target — not a fixed product catalog |
| Data-driven iteration |
Every development stage is supported by quantitative analytics, not subjective assessment |
| End-use validated |
The ingredient is tested in the customer's actual process (or a validated proxy) before scale-up |
| Regulatory by design |
Target market regulations (EU, US FDA, China GB, Japan, etc.) are embedded in the specification from Day 1 |
| Full traceability |
Every custom lot is traceable to seed variety, field, processing date, and production line |
1.2 Typical Customization Areas
| Parameter |
Standard Options |
Customization Possibilities |
| Particle size |
Flakes (0.25–3.35 mm) or Powder (60 mesh) |
Any sieve cut from 5 mesh to 200 mesh |
| Moisture content |
≤ 6.0% |
3.0 – 8.0% (depending on stability requirements) |
| Color (Lab*) |
As per grade spec |
Targets from L 82 to L 94 by variety selection & process tuning |
| pH |
5.3 – 6.3 |
5.0 – 7.0 (food-grade acid/carbonate adjustment) |
| Reducing sugars |
≤ 1.5% (≤ 1.0% premium) |
Down to ≤ 0.3% (for extreme low-browning applications) |
| Starch content |
73 – 77% |
68 – 82% (by variety selection and processing) |
| Water absorption |
5.5 – 7.5 g/g |
4.0 – 9.0 g/g (process modification) |
| Microbiological limits |
As per standard |
10× stricter for infant food, 10× relaxed for heat-treated applications |
| Packaging |
20/25 kg kraft bag |
Any format: bulk bags, vacuum blocks, retail packs, single-serve sachets |
| Certifications |
ISO, FSSC, BRC, Halal, Kosher |
Organic, specific Halal authority, specific Kosher certification |
| Fortification |
None |
Vitamin premix, mineral fortification, protein enrichment (co-processing) |
2. The 5-Stage Customized Development Workflow
STAGE 1 STAGE 2 STAGE 3
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Customer Needs │ ──▶ │ Lab-Scale │ ──▶ │ Pilot-Scale │
│ & Requirement │ │ Development │ │ Validation │
│ Analysis │ │ (Sample) │ │ (Trial Batch) │
└─────────────────┘ └─────────────────┘ └─────────────────┘
│
▼
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Continuous │ ◀── │ Production & │ ◀── │ Specification │
│ Improvement │ │ Quality Release │ │ Freeze & │
│ & Feedback │ │ │ │ Contract │
└─────────────────┘ └─────────────────┘ └─────────────────┘
STAGE 5 STAGE 4
3. Stage 1: Customer Needs & Requirement Analysis
3.1 Intake & Discovery
When a customer approaches Hongji with a customized ingredient request, the CID team initiates a structured discovery process:
Step 1 — Application Profile
| Information Requested |
Purpose |
| End-product category |
Bread, snack, soup, batter, meat, etc. |
| Target market (country/region) |
Regulatory framework, labeling requirements |
| Processing method |
Direct addition, extrusion, frying, retort, baking |
| Inclusion rate (planned %) |
Required functional concentration |
| Production scale |
Annual volume, batch size, frequency |
| Competing product reference |
Target quality benchmark |
| Key success criteria |
What "good" looks like |
Step 2 — Technical Specification Request
| Parameter |
Customer Target |
Acceptable Tolerance |
| Moisture |
___ % |
± ___ |
| Protein |
___ % (dwb) |
± ___ |
| Starch |
___ % (dwb) |
± ___ |
| Ash |
___ % (dwb) |
± ___ |
| Reducing sugars |
___ % (dwb) |
± ___ |
| pH |
___ |
± ___ |
| Color (L/a/b*) |
___ / ___ / ___ |
± ___ |
| Particle size D50 |
___ μm |
± ___ |
| Water absorption |
___ g/g |
± ___ |
| Microbial limits |
___ CFU/g (TPC) |
___ |
Step 3 — Regulatory & Compliance Check
| Requirement |
Checked Against |
| Heavy metal limits |
EU 1881/2006, US FDA, GB 2762, or customer-defined |
| Pesticide MRLs |
EU 396/2005, US 40 CFR 180, or customer-defined |
| Allergen status |
EU 1169/2011, US FALCPA, or customer-defined |
| GMO labeling |
EU 1829/2003, US voluntary, CN GB 7718 |
| Organic certification |
EU 2018/848, USDA NOP, GB/T 19630 |
| Kosher / Halal |
As required |
| Country-specific |
Import regulations, tariffs, duty preferences |
Step 4 — Deliverable: Requirement Specification Document (RSD)
The RSD is a signed agreement between Hongji and the customer covering all technical, commercial, and regulatory parameters. It serves as the source of truth for all subsequent development stages.
4. Stage 2: Lab-Scale Development & Sample Generation
4.1 Lab Capabilities
| Equipment |
Purpose |
| Lab-scale drum dryer (0.5 m²) |
Small-batch flake production |
| Lab hammer mill with sieve control |
Particle size customization |
| Lab extruder (twin-screw, 20 mm) |
Process simulation |
| RVA (Rapid Visco Analyzer) |
Viscosity profiling |
| Texture analyzer (TA.XT2) |
Texture quantification |
| HunterLab colorimeter |
Color matching |
| Bench-top spray dryer (for blends) |
Powder blending optimization |
| Brabender Farinograph / Extensograph |
Dough rheology (bakery applications) |
4.2 Development Process
| Step |
Activity |
Typical Duration |
| 1 |
Ingredient selection: choose base potato variety and product type (flakes vs. powder) |
1 – 2 days |
| 2 |
Process parameter design: drum dryer temperature, residence time, milling screen size |
2 – 3 days |
| 3 |
Lab batch production: 1 – 5 kg of sample |
1 day |
| 4 |
Physical & chemical analysis: full analytical panel |
2 – 3 days |
| 5 |
Functional testing: rehydration, viscosity, water binding, color stability |
1 – 2 days |
| 6 |
Application simulation: customer's end-use test (e.g., bench-scale baking, extrusion) |
2 – 5 days |
| 7 |
Sensory evaluation (if applicable) |
1 day |
| 8 |
Iteration: adjust and repeat steps 3–7 as needed |
variable |
Total lab phase: Typically 10 – 20 working days per iteration cycle.
4.3 Deliverables — Lab Phase
- Sample A, B, C... (progressively optimized, 200 g – 2 kg each)
- Preliminary COA (Certificate of Analysis)
- Application test report
- Recommendation for pilot-scale parameters
- Documented specification target for Stage 3
5. Stage 3: Pilot-Scale Validation
5.1 Pilot Plant Capabilities
| Equipment |
Scale |
Key Features |
| Industrial drum dryer (3 m²) |
50 – 200 kg/batch |
Steam-heated, variable speed |
| Industrial hammer mill |
50 – 200 kg/h |
Multi-screen carousel |
| Air classifier |
50 – 150 kg/h |
Cut point adjustment |
| Ribbon blender |
200 L |
For blending and fortification |
| Twin-screw extruder (60 mm) |
50 – 150 kg/h |
Full temperature control |
| Industrial packaging line (prototype) |
— |
Vacuum, nitrogen flush, bag-in-box |
5.2 Pilot Process
| Step |
Activity |
Duration |
| 1 |
Scale-up calculation: determine process parameters for pilot equipment |
1 day |
| 2 |
Raw material preparation: select specific field lot of target variety |
1 – 2 days |
| 3 |
Pilot run: 50 – 200 kg batch |
1 day |
| 4 |
Full analytical panel (expanded): physical, chemical, microbiological |
3 – 5 days |
| 5 |
Customer application test: send 10 – 50 kg to customer for their own line trial |
5 – 15 days |
| 6 |
Stability testing: accelerated shelf life (40°C / 75% RH, 4 weeks) |
28 days |
| 7 |
Process capability analysis: Cp, Cpk calculation |
2 days |
| 8 |
Documentation: draft specification sheet, provisional COA format |
2 days |
5.3 Decision Gates
| Gate |
Criteria to Pass |
Decision |
| Gate 1 — Pilot Specification |
All parameters within customer tolerance (±2σ) |
Proceed to customer trial |
| Gate 2 — Customer Trial |
Customer confirms product meets end-use requirements |
Proceed to spec freeze |
| Gate 3 — Shelf Life |
No significant degradation after accelerated test |
Final approval |
5.4 Deliverables — Pilot Phase
- Pilot batch report (full analytical data)
- Customer trial report (customer-signed)
- Proposed final specification (draft)
- Shelf life projection (accelerated data)
- Process capability data (Cp, Cpk)
- Packaging recommendation
6. Stage 4: Specification Freeze & Commercial Contract
6.1 Final Specification Document
The finalized specification includes:
| Section |
Content |
| Product identity |
Product name, description, item code |
| Physical specs |
Moisture, particle size, bulk density, color, pH, water absorption |
| Chemical specs |
Starch, protein, ash, fat, fiber, reducing sugars, SO₂ |
| Microbiological specs |
TPC, yeast/mould, Enterobacteriaceae, pathogens |
| Heavy metals |
Pb, Cd, Hg, As limits |
| Nutritional profile |
Per 100 g (as sold) |
| Packaging specs |
Bag type, inner liner, net weight, pallet configuration |
| Labeling |
Country of origin, ingredient declaration, allergen statement, GMO status |
| Certifications |
List of applicable certifications |
| Storage |
Temperature, RH, shelf life from production |
| COA template |
Standard format for every shipment |
6.2 Commercial Terms
| Parameter |
Typical Range |
| MOQ (Minimum Order Quantity) |
8 – 16 MT (negotiable) |
| Price structure |
FOB Tianjin / CIF destination port |
| Lead time |
21 – 45 days from PO confirmation |
| Payment terms |
T/T (30% deposit + 70% against BL) or L/C |
| Exclusivity |
Available for volume commitments |
| NDA / IP protection |
Signed before specification disclosure |
6.3 Deliverables — Commercial Phase
- Signed final specification sheet
- Commercial quotation
- Supply agreement or framework contract
- Quality agreement (including sampling plan, AQL)
- NDA (if not already signed)
7. Stage 5: Production & Quality Release
7.1 Production Flow for Custom Product
Raw Material Selection (specific variety + field lot)
↓
Incoming QC (potatoes: dry matter, sugars, defects)
↓
Production Run (dedicated line, documented CCPs)
↓
Inline QC (moisture every 1 h, color every 2 h, particle size every 2 h)
↓
Pre-Packaging QC (metal detector verified)
↓
Holding (24 h equilibration in warehouse)
↓
Final QC (full COA generated)
↓
Customer notification & approval (for first 3 commercial batches)
↓
Shipping
7.2 Quality Control Protocol for Custom Products
| QC Activity |
Frequency |
Critical to Customer |
| Moisture |
Every 60 minutes |
±0.3% of target |
| Color (Lab*) |
Every 120 minutes |
ΔE ≤ 2.0 vs. reference |
| Particle size (sieve analysis) |
Every 120 minutes |
±5% passing target mesh |
| Bulk density |
Every 240 minutes |
±30 g/L of target |
| Microbiological |
Every production batch |
Per spec |
| Sensory (appearance, odor) |
Every production batch |
No off-notes |
| Application test (customer-defined) |
First 3 batches; then monthly |
As agreed |
| Water activity (aw) |
Every 480 minutes |
≤ target |
7.3 First Commercial Batch — Enhanced Protocol
For the first 3 commercial batches, the customer receives:
- Full COA with all parameters
- Microbiological results (before shipment)
- 2 kg retention sample from each production hour
- Digital photos of product appearance
- Application test result (per customer-defined method)
- Container loading photos (seal number, condition)
7.4 Deliverables — Production Phase
- Commercial COA for each lot
- Shipment documentation (packing list, invoice, certificate of origin, health certificate)
- Container seal numbers and photos
8. Continuous Improvement & Feedback
8.1 Post-Delivery Review
| Activity |
Timing |
Purpose |
| Customer feedback survey |
30 days post-delivery |
Quality, consistency, service |
| Production review meeting |
Quarterly |
Process optimization, cost reduction |
| Specification review |
Annual |
Update based on evolving needs |
| New technology update |
As available |
Introduce improvements (e.g., lower energy drying, enhanced nutrition) |
8.2 Typical Customization Project Timeline
| Phase |
Duration |
| Stage 1: Needs Analysis |
1 – 2 weeks |
| Stage 2: Lab Development (2–3 iterations) |
4 – 8 weeks |
| Stage 3: Pilot Validation (including stability) |
6 – 10 weeks |
| Stage 4: Spec Freeze & Contract |
2 – 3 weeks |
| Stage 5: First Commercial Production |
3 – 4 weeks |
| Total (expedited) |
12 – 16 weeks |
| Total (standard) |
20 – 28 weeks |
9. Case Study Examples
9.1 Case A: Low-Browning Potato Flakes for Snack Seasoning
| Parameter |
Customer Requirement |
Solution |
| Target application |
Surface seasoning light-colored snack |
— |
| Critical issue |
Flakes in seasoning caused dark spots after baking |
— |
| Solution |
Low reducing sugar variety (Atlantic, early harvest) + sulfite-free processing |
Reducing sugars ≤ 0.4% |
| Particle size |
< 300 μm (50 mesh) |
Achieved via hammer mill + air classification |
| Development time |
10 weeks (expedited) |
Delivered |
9.2 Case B: High-Viscosity Potato Flakes for Frozen Soup
| Parameter |
Customer Requirement |
Solution |
| Target application |
Frozen cream soup concentrate |
— |
| Critical issue |
Regular flakes produced thin soup; needed higher viscosity |
— |
| Solution |
Modified drum drying parameters + specific variety (Russet Burbank) |
WAI increased from 6.0 to 8.0 g/g |
| Freeze-thaw stability |
≤ 2% syneresis after 5 cycles |
Achieved with processing modification |
| Development time |
16 weeks |
Delivered |
9.3 Case C: Fortified Potato Powder for Infant Nutrition
| Parameter |
Customer Requirement |
Solution |
| Target application |
Baby food (6+ months) |
— |
| Critical issue |
Standard product did not meet infant food microbial limits |
— |
| Solution |
Dedicated production line, tighter process control, enhanced hygiene protocols |
TPC ≤ 1,000 CFU/g, no pathogens |
| Fortification |
Iron (10 mg/100g) + Zinc (5 mg/100g) |
Dry-blended using ribbon mixer |
| Development time |
22 weeks (including clinical stability) |
Delivered |
To initiate a customized ingredient development project:
- Initial inquiry: [email protected] or contact your Hongji account manager
- NDA execution (if needed): Standard mutual NDA, signed within 2 business days
- Kickoff meeting: Video conference or in-person at Zhangjiakou facility
- RSD signing: Requirement Specification Document agreed by both parties
What we need from you on Day 1:
- Target application (product category and brief description)
- Key specification parameters (even approximate ranges)
- Target market / countries
- Annual volume estimate
- Timeline expectation
Document version: 1.0 | Last updated: July 2026 | Prepared by: Hongji Agriculture — Customized Ingredient Development Division
For inquiries: [email protected] | Phone: +86 400-633-0616
Hongji Agriculture Co., Ltd. | Zhangjiakou, Hebei, China | hjpotatoflakes.com
References
- National Health Commission of China. GB National Food Safety Standards — contaminant limits and test methods.
- European Commission. Regulation (EC) No 1881/2006 — setting maximum levels for certain contaminants in foodstuffs.
- Hongji Agriculture Technology Co., Ltd. 2026. "Customized Ingredient Development Process — Hongji Agriculture." Hongji Agriculture Knowledge Center.
This document is part of the Hongji Agriculture (弘基农业) Technical Documentation Series. For more information about our vertically integrated potato supply chain — from seed breeding and cultivation to processing and global export — visit our official B2B website: https://hjpotatoflakes.com