Blending rice and macadamia proteins creates a smoother, more functional food ingredient
Shuai X, Fang M, McClements DJ, Zhang M, Wang Z
Crop Improvement
Rice and macadamia, two crops grown across tropical and subtropical regions, turn out to be nutritionally complementary at the molecular level, and blending their proteins unlocks a kind of functionality that neither crop can offer on its own.
Rice protein is nutritious but notoriously difficult to use in food because it clumps and won't mix well with water. Scientists found that when you blend it with protein from macadamia nuts in equal amounts, the two proteins grab onto each other and unfold, forming a smooth, stable mixture that behaves much more like the animal proteins food manufacturers have long preferred. The blend also covers more of the essential amino acids your body needs than either protein covers alone.
Key Findings
A 1:1 ratio of rice protein to macadamia protein isolate achieved 94% water dispersibility, compared to the near-insoluble baseline of rice protein alone.
Emulsifying performance improved 120-fold and foaming performance improved 3.2-fold over rice protein alone.
Co-assembly is driven primarily by hydrophobic interactions between unfolded polypeptide chains, and the resulting blend has a more complete essential amino acid profile than either protein individually.
chevron_right Technical Summary
Researchers combined rice protein and macadamia protein in equal parts to create a new blended ingredient that is far more soluble and functional than either protein alone. The resulting composite dramatically outperformed plain rice protein at emulsifying and foaming, two properties critical for using plant proteins in real foods.
Abstract Preview
Original paper
Co-assembly of rice and macadamia proteins for enhanced plant protein functionality: Fabrication, properties, and mechanism.
Plant proteins are promising sustainable ingredients, but their use is limited by poor solubility and inadequate functionality. In this study, rice protein (RP) and macadamia protein isolate (MPI) ...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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