Skip to main content
Log in

Monitoring the Effects of Ingredients and Baking Methods on Quality of Gluten-Free Cakes by Time-Domain (TD) NMR Relaxometry

  • Original Paper
  • Published:
Food and Bioprocess Technology Aims and scope Submit manuscript

Abstract

Gluten-free products exhibit some undesirable features due to the absence of the gluten network. Effects of ingredient interactions and baking type on the food matrix have not clearly been explored. The objective of this study was to investigate the effect of ingredient and baking types on the quality characteristics of cake by using nuclear magnetic resonance (NMR) relaxometry. Carob bean flour containing gluten-free cakes formulated either with hydroxypropyl methylcellulose (HPMC) or whey protein were baked in both conventional and microwave–infrared combination ovens. Specific gravity of batters was measured and cakes were analyzed in terms of weight loss, hardness, and specific volume. Microstructure of cakes was investigated by scanning electron microscopy (SEM). NMR relaxometry was used to support the information about water retention, and water–food matrix interactions. Cakes baked in microwave–infrared (MW-IR) combination oven had some undesirable characteristics due to higher weight loss and insufficient gelatinization of starch which was supported by SEM results. Compartments of relaxation data also indicated two specific proton pools for MW-IR-baked samples, which represented gelatinized and ungelatinized parts of the cakes. Spin–spin relaxation times (T2) were found to be good indicators for explaining the physical state and distribution of water inside the samples, having Pearson correlation of 0.96, 0.86, and − 0.98 (p < 0.05) between monoexponential T2 values and hardness, specific volume, and moisture, respectively.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1

Similar content being viewed by others

References

Download references

Funding

This research was funded by Middle East Technical University, Faculty of Engineering, Scientific Research Projects Funds, with the proposal number BAP- 03-14-2017-005. COST Action CA 15209 European Network on Relaxometry is also acknowledged as some of the findings are discussed in the action’s network meetings and suggestions were taken into consideration in the final text.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Gulum Sumnu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yildiz, E., Guner, S., Sumnu, G. et al. Monitoring the Effects of Ingredients and Baking Methods on Quality of Gluten-Free Cakes by Time-Domain (TD) NMR Relaxometry. Food Bioprocess Technol 11, 1923–1933 (2018). https://doi.org/10.1007/s11947-018-2152-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11947-018-2152-z

Keywords

Navigation