Macrotermes flour inclusion in biscuits: Effects on nutritional, sensorial and microbial characteristics.

Nthabeleng Vanqa, Vusi Vincent Mshayisa, Moses Basitere
Author Information
  1. Nthabeleng Vanqa: Department of Food Science and Technology, Cape Peninsula University of Technology, Bellville, 7535, South Africa.
  2. Vusi Vincent Mshayisa: Department of Food Science and Technology, Cape Peninsula University of Technology, Bellville, 7535, South Africa.
  3. Moses Basitere: Academic Support Program for Engineering (ASPECT) in Cape Town, Centre of Higher Education Development University of Cape Town, Rondebosch, 7701, Cape Town, South Africa.

Abstract

As the world's population expands, edible insects have been proposed as a food source that might address issues related to nutrition, health, the environment, and the economy. This study aimed to create a novel biscuit by adding () flour to wheat flour in various concentrations (5,10, 15 and 20 %). The moisture content of the insect composite flours varied between 6.83 % and 7.76 %, whereas the moisture content of the biscuits ranged from 2.86 % to 7.90 %. A significant difference (p < 0.05) was noted in the protein content of both the composite flours and biscuits as the concentration of insect flour increased, with values ranging from 15.03 % to 21.52 % for the flours and 17.38 % to 20.63 % for the biscuits. The lightness (L*) of the composite flours significantly decreased (p < 0.05) with higher additions of edible insect flour, whereas the redness (a*) and yellowness (b*) attributes did not show any statistical differences (p > 0.05). The biscuits were generally darker than the composite flours, as indicated by substantially lower L* values. The water activity of the biscuits was between 0.44 and 0.67. Sensory evaluation revealed that the substitution level (up to 15 %) is ideal for preparing acceptable insect-based biscuits. The panellist perceived no significant differences (p > 0.05) in terms of the texture between the insect-enriched biscuits and the control, except for MZ-20. The absence of pathogenic microogranisms in all baked biscuits containing edible insect flour highlights the effectiveness of heat treatment, ensuring that the biscuits meet microbiological safety guidelines. Additionally, flour shows promise as a novel functional ingredient for the food industry.

References

  1. Food Chem. 2017 Jun 1;224:414-422 [PMID: 28159288]
  2. Foods. 2022 Oct 20;11(20): [PMID: 37431022]
  3. Annu Rev Entomol. 2013;58:563-83 [PMID: 23020616]
  4. Compr Rev Food Sci Food Saf. 2013 Nov;12(6):662-678 [PMID: 33412718]
  5. Foods. 2019 Feb 01;8(2): [PMID: 30717098]
  6. Foods. 2022 Mar 28;11(7): [PMID: 35407063]
  7. Insects. 2017 Jan 13;8(1): [PMID: 28098752]
  8. Food Res Int. 2020 Mar;129:108839 [PMID: 32036916]
  9. Foods. 2020 Jul 27;9(8): [PMID: 32726913]
  10. Heliyon. 2020 Apr 14;6(4):e03754 [PMID: 32322730]
  11. Food Chem. 2013 Dec 15;141(4):3341-8 [PMID: 23993491]
  12. J Food Sci Technol. 2020 Mar;57(3):832-839 [PMID: 32123403]
  13. Molecules. 2020 Nov 30;25(23): [PMID: 33265946]
  14. Food Sci Nutr. 2015 Sep;3(5):363-9 [PMID: 26405522]
  15. Acta Sci Pol Technol Aliment. 2018 Jul-Sep;17(3):227-233 [PMID: 30269462]
  16. Mol Nutr Food Res. 2013 May;57(5):802-23 [PMID: 23471778]
  17. Heliyon. 2019 Mar 21;5(3):e01364 [PMID: 30957045]
  18. Insects. 2020 Dec 31;12(1): [PMID: 33396313]
  19. Foods. 2022 Feb 28;11(5): [PMID: 35267357]
  20. Foods. 2022 Jul 19;11(14): [PMID: 35885385]
  21. Foods. 2022 Apr 05;11(7): [PMID: 35407134]
  22. J Food Sci Technol. 2017 Jun;54(7):2156-2165 [PMID: 28720973]
  23. J Agric Food Chem. 2017 Mar 22;65(11):2275-2278 [PMID: 28252948]

Word Cloud

Created with Highcharts 10.0.0biscuitsflourfloursinsectcomposite05ediblecontentfoodnovel15moisture7whereassignificantp < 0valuesL*differencesp > 00world'spopulationexpandsinsectsproposedsourcemightaddressissuesrelatednutritionhealthenvironmenteconomystudyaimedcreatebiscuitaddingwheatvariousconcentrations51020 %varied683 %76 %ranged286 %90 %differencenotedproteinconcentrationincreasedranging03 %2152 %1738 %2063 %lightnesssignificantlydecreasedhigheradditionsrednessa*yellownessb*attributesshowstatisticalgenerallydarkerindicatedsubstantiallylowerwateractivity4467Sensoryevaluationrevealedsubstitutionlevel15 %idealpreparingacceptableinsect-basedpanellistperceivedtermstextureinsect-enrichedcontrolexceptMZ-20absencepathogenicmicroogranismsbakedcontaininghighlightseffectivenessheattreatmentensuringmeetmicrobiologicalsafetyguidelinesAdditionallyshowspromisefunctionalingredientindustryMacrotermesinclusionbiscuits:Effectsnutritionalsensorialmicrobialcharacteristics

Similar Articles

Cited By (1)