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Related Experiment Video

Updated: Jun 1, 2026

Non-destructive SPE-UPLC-based Quantification of Aflatoxins and Stilbenoid Phytoalexins in Single Peanut (Arachis spp.) Seeds

Non-destructive SPE-UPLC-based Quantification of Aflatoxins and Stilbenoid Phytoalexins in Single Peanut (Arachis spp.) Seeds

Published on: April 19, 2024

In-shell pistachio nuts reduce caloric intake compared to shelled nuts.

Carla S Honselman¹, James E Painter, Karla J Kennedy-Hagan

¹Family and Consumer Sciences, Eastern Illinois University, 600 Lincoln Ave., Klehm Hall 1030, Charleston, IL 61920, USA. cshonselman@eiu.edu

|June 8, 2011

Summary

This summary is machine-generated.

Eating in-shell pistachios significantly reduces calorie consumption compared to shelled varieties. This study found that the physical act of shelling nuts may lead to mindful eating and lower caloric intake, without affecting fullness.

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Area of Science:

Nutrition Science
Behavioral Economics

Background:

Portion control is a key strategy for weight management.
The physical form of food can influence consumption patterns and satiety.

Purpose of the Study:

To investigate whether consuming in-shell pistachios leads to lower caloric intake compared to shelled pistachios.
To determine the impact of pistachio form on perceived fullness and satisfaction.

Main Methods:

A controlled study with 140 university students evaluated pistachio consumption.
Participants self-selected portions of either in-shell or shelled pistachios.
Caloric intake, fullness, and satisfaction were measured after consumption.

Main Results:

In-shell pistachio consumers ate 125 calories, while shelled consumers ate 211 calories, a 41% difference (p≤.01).
No significant differences in fullness or satisfaction were reported between the two groups (p≥.01).
Caloric intake was significantly influenced by the physical form of the pistachios.

Conclusions:

Consuming in-shell pistachios can be an effective strategy for reducing overall calorie intake.
The time and effort required for shelling may promote mindful eating and reduce consumption volume.
Food form, not just caloric density, plays a crucial role in regulating energy intake.