RD43 rice flour in noodles, blood sugar and appetite in people
What it found
Noodles made with 30% RD43 rice flour lowered blood sugar after eating and raised gut hormones linked to fullness in people.
People also felt less hungry for up to 120 minutes.
What they found
Studies in people
Blood sugar after eating
When people ate the 30% RD43 rice noodles, their blood sugar was lower between 15 and 90 minutes after the meal compared to regular noodles.
Gut hormones after eating
Thirty minutes after eating the 30% RD43 rice noodles, people had higher levels of two gut hormones called GLP-1 and PYY. These hormones are linked to feeling full.
Hunger and fullness feelings
People who ate the 30% RD43 rice noodles felt fuller and had less desire to eat. This lasted for up to 120 minutes after the meal.
Other findings
Starch breakdown in noodles
Replacing 10 to 40% of the wheat with RD43 rice flour reduced how quickly starch broke down. It also increased the amount of starch that stayed undigested in the noodles.
Noodle look and texture
Noodles made with 30% RD43 rice flour were lighter in colour and softer than regular wheat noodles. People rated them just as acceptable overall.
What the authors conclude
- They suggest RD43 rice flour could be a useful ingredient in noodles for managing blood sugar after meals.
- They say it may also help control gut hormones and feelings of hunger.
How it was done
The authors wanted to make wheat noodles using 10 to 40% RD43 rice flour instead of wheat. They also wanted to see how these noodles affected starch breakdown, blood sugar, gut hormones and hunger in people.
They made noodles replacing 10 to 40% of the wheat with RD43 rice flour and tested their properties. They then gave the 30% rice flour noodles to people and measured blood sugar, gut hormones and hunger feelings afterwards.
What it can’t tell you
- We summarised it from the abstract only.
- This trial only looked at effects over about two hours after one meal. It cannot show what happens if people eat these noodles every day for weeks or months.
Who paid
- Authors work at
- Chulalongkorn University, Thailand
The paper
- Title
- RD43 rice flour: the effect on starch digestibility and quality of noodles, glycemic response, short-acting satiety hormones and appetite control in humans
- Type
- Randomised controlled trial
- Evidence
- Studies in people
- Summarised from
- Abstract only
- Cite
- Suklaew PO, Chusak C, Wang CK, Adisakwattana S (2021). RD43 rice flour: the effect on starch digestibility and quality of noodles, glycemic response, short-acting satiety hormones and appetite control in humans. Food & function. doi:10.1039/d1fo01389kPubMed 34259302DOI
Summary written 30 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error