Source
doi:10.1002/leg3.70044 — original publication (opens in a new tab; the file is not redistributed)
Context: ni · Feeds D02 — plant-protein cross-check (protein % term of LEGUME_PROTEIN_KG_HA)
The independent NZ faba protein cross-check that OT_088 tracked but had not verified
Peer-reviewed food-science study of four New-Zealand-grown faba varieties (Early Long Pod, Evergreen, Coles Dwarf, Janet), Canterbury 2022–23 season. Retrieved as the first-party open-access PDF (Wiley, DOI 10.1002/leg3.70044), verified via
pdftotext. It advances part of RT_291 — the “newer NZ faba cross-check (Navneet 2025)” leg — but supplies no yield (t/ha) data, so RT_291’s main residual (NZ field-pea + lupin yield × protein primary) stays open.
Summary
A peer-reviewed study (Massey University / Riddet Institute, MBIE Endeavour-funded) of the physical, microstructural and cooking properties of four faba bean (Vicia faba) varieties grown in New Zealand — Early Long Pod, Evergreen, Coles Dwarf and Janet — under uniform Canterbury agronomic conditions in the 2022–23 season. The authors state it is the first published characterisation of NZ-grown faba varieties. For the Neobiome food model the load-bearing output is an independent NZ measurement of faba crude protein: 24.81–27.49% of flour (Kjeldahl N×6.25), plus starch 35.3–39.1% and total dietary fibre 9.7–10.3%. This cross-checks the whole-seed 27.7–31.1% protein figure that OT_088 (FAR Focus 8, 2012) supplies to the plant-protein cell. Secondary but NI-relevant: overnight soaking cut cooking time by “at least 30 min” (nearly a third) for every variety, “thereby decreasing energy consumption” — a food→energy (household cooking-load) coupling. The paper is food-science, not agronomy: it reports no grain yield (t/ha), so it does not close RT_291’s yield residual.
Key claims
- claim: "Flour crude protein content of four NZ-grown faba varieties (Kjeldahl, N×6.25): Early Long Pod 24.81 ± 0.51%, Evergreen 24.81 ± 0.22%, Coles Dwarf 27.49 ± 0.06%, Janet 25.38 ± 0.07% (Table 6). Abstract: 'The faba bean seeds showed high levels of protein (24%–27%) and starch content (35%–39%), with Coles Dwarf exhibiting a significantly higher protein content.' §3.5: 'Cole Dwarf had the highest protein percentage (27.49%), which was significantly higher than Janet (25.38%), Early Long Pod (24.81%), and Evergreen (24.81%), all of which had no significant difference in protein content.' Basis: flour (broad beans ground and sieved to remove larger husk fragments — 'not traditionally dehulled'); N-factor 6.25 (Vogelsang-O'Dwyer et al. 2020)."
source_location: "Abstract; Table 6 (Protein, starch, and dietary fiber content of flour from faba bean varieties); §3.5 Protein, Starch, and Dietary Fiber; §2.7 (Kjeldahl method, N×6.25)"
- claim: "Flour starch and total dietary fibre of the four NZ varieties (Table 6): starch (single-run, not replicated) Early Long Pod 39.1%, Evergreen 37.8%, Coles Dwarf 35.3%, Janet 38.4%; total dietary fibre Early Long Pod 10.2%, Evergreen 9.7%, Coles Dwarf 10.3%, Janet 10.2%. §3.5: 'the varieties showed a total dietary fiber range of 9.7%–10.3% and a starch range of 35.3%–39.1%.' (Starch and total dietary fiber values were not tested in replicates — Table 6 footnote a.)"
source_location: "Table 6 (footnote a: 'Starch and total dietary fiber values were not tested in replicates'); §3.5"
- claim: "First published characterisation of NZ-grown faba varieties; Canterbury 2022–23 provenance. §1: 'To the best of the authors' knowledge, there is no published information on New Zealand grown varieties of faba beans.' §2.1: 'All four varieties were grown in Canterbury (New Zealand)' (obtained from Morton Smith-Dawe Ltd, Christchurch). §3.1: 'all varieties were grown under uniform agronomic conditions during the 2022–2023 season in Canterbury, New Zealand.' Physical seed traits (length, width, thickness, sphericity, equivalent diameter, seed volume, surface area, thousand-kernel weight) did not differ significantly among the four varieties (Table 1)."
source_location: "§1 Introduction; §2.1 Materials; §3.1 Physical Traits of Faba Bean Seeds (Table 1)"
- claim: "Soaking markedly reduces cooking time and cooking energy. Cooking time without presoaking (Table 4): Early Long Pod 66.67 ± 5.77 min, Evergreen 56.67 ± 2.89, Coles Dwarf 61.67 ± 5.77, Janet 73.33 ± 2.89; with presoaking (8 h at 25°C): Early Long Pod 25.00, Evergreen 20.00, Coles Dwarf 26.67, Janet 36.67 min. §3.3: 'Soaking the faba beans overnight before cooking has been shown to significantly reduce cooking time (by at least 30 min), thereby decreasing energy consumption.' §4: 'Soaking the faba beans ahead of time reduced cooking time by nearly a third.' Abstract: 'Evergreen seeds took the least time to cook, while those from Janet required the longest time.'"
source_location: "Abstract; Table 4 (Cooking time (min) with and without presoaking); §3.3 Hydration and Cooking Characteristics; §4 Conclusions"Neobiome Intelligence relevance
Feeds D02 as an independent NZ cross-check on the protein-% term of the food model’s plant-protein cell (LEGUME_PROTEIN_KG_HA; diet_mode = vegetarian/vegan, D29). It does not change the constant — it corroborates it and tightens confidence:
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Protein-% cross-check (the primary contribution). Navneet’s flour crude protein 24.81–27.49% (Canterbury 2022–23, four varieties) sits at and just below the lower end of OT_088’s FAR whole-seed 27.7% (spring) / 31.1% (winter). The two measures are not identical — Navneet is sieved flour (husk fragments partly removed) with N×6.25 Kjeldahl, FAR is whole-seed — and flour is usually higher protein than whole seed because the husk is low-protein, so Navneet reading lower than FAR points to lower-protein cultivars and/or a lower-yielding season (OT_088 notes protein rises with yield, +0.52%/t·ha⁻¹). Net effect for the model: it supports OT_088’s conservative recommendation (~1,500 kg protein/ha/yr, built on the spring-cultivar 27.7%) — an independent NZ dataset confirms ~25% is a defensible floor for the protein fraction, so the constant should not be revised upward on faba grounds.
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No yield data — the model’s yield term is untouched. This is a food-technology/cooking study, not an agronomy trial: it reports no grain yield (t/ha).
LEGUME_PROTEIN_KG_HA= yield × protein%; this source firms only the protein% multiplier, leaving OT_088’s surveyed 5.6 t/ha mean as the sole NZ yield primary. RT_291’s principal ask — a NZ field-pea + lupin yield × protein primary to build a representative mixed-pulse figure — is therefore not served here (see Research targets). -
Cooking-energy coupling (secondary, no current cell). Overnight soaking cuts faba cooking time by “at least 30 min” / “nearly a third” across all four varieties, “thereby decreasing energy consumption.” This is a concrete food→energy (household cooking-load) lever — relevant if the model later prices cooking energy in the diet/energy nexus — but there is no such cell today, so it is captured as evidence, not a feed. Variety also matters (Janet ~73 min raw vs Evergreen ~57 min), i.e. cultivar choice is itself a cooking-energy variable.
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Composition context. Starch 35.3–39.1% and dietary fibre 9.7–10.3% round out the NZ faba nutrient picture already sketched in D02’s diet-diversity framing; not model-load-bearing (starch/fibre were single-run, unreplicated).
Research targets
Checked. This source advances one leg of RT_291 (the “newer NZ faba cross-check: Navneet et al. 2025” item) — that cross-check is now retrieved and verified. It does not resolve RT_291, which principally seeks a NZ field-pea + lupin yield × protein primary (not in this paper) and the PwC/FAR pea+faba protein-extraction feasibility (a separate document). RT_291 stays Open. No new research targets — the paper’s own references are food-chemistry method citations (RVA, SEM, Kjeldahl, hard-to-cook chemistry) with no NZ-quantitative gap for NI, and creating a target for each would be page sprawl.
Documents to retrieve
- None new.
Research gaps
- RT_291 (stays Open — advanced, not resolved). The Navneet 2025 NZ-faba-protein cross-check leg is now delivered by this source; the residual is the NZ field-pea + lupin yield (t/ha) × protein (%) primary (to replace the faba-only
LEGUME_PROTEIN_KG_HAwith a representative mixed-pulse value) plus the PwC/FAR pea+faba protein-extraction feasibility (MPI-funded).
Notes
- Prefix / source_type.
lit_/literature— a peer-reviewed open-access journal article (Legume Science, Wiley, DOI 10.1002/leg3.70044). This differs from the sibling faba source OT_088, which isot_grey-literature (a FAR grower’s guide). Both feed D02; the two are complementary, not duplicates (OT_088 = NZ yield + whole-seed protein primary; this = NZ flour-protein/cooking cross-check). - Author name. The lead author publishes under the single name Navneet (Massey University / Riddet Institute); recorded as
Navneetinauthors:and the citation. Co-authors: Jaspreet Singh, Nneka I. Ajomiwe, Lovedeep Kaur (corresponding). - Measurement-basis caveat (load-bearing for the cross-check). Navneet protein is on flour (ground, fine-sieved to drop larger husk components — the beans were not traditionally dehulled), N×6.25; FAR/OT_088 is whole-seed. They are close but not directly interchangeable — treat Navneet as a corroborating bracket on the protein fraction, not a replacement figure. Both are crude protein (not digestibility-adjusted, not an isolate).
- Unreplicated figures flagged. Starch and total-dietary-fibre values (Table 6) were single-run, not triplicated (paper’s own footnote) — cited for context only, not as model inputs. Crude protein, cooking time, physical, colour, swelling/hydration and RVA data are triplicate (protein/cooking N=3; colorimetry N=8) with ANOVA at p≤0.05.
- data_quality: high — peer-reviewed primary research, first-party PDF (not AI-synthesised), all cited figures (protein %, starch/fibre, cooking times, provenance) grep-verified against the raw’s tables and body via
pdftotext. - Cross-reference. Resolves the “NOT independently opened/verified” flag OT_088 carried against Navneet 2025.
Connections
Links to
EDT domains (1): D02: Smart Food Systems & Agriculture
Sources (1): OT_088
Referenced by
EDT domains (1): D02: Smart Food Systems & Agriculture
Sources (1): OT_088