Utilization of Spirulina platensis microalgae as edible coating to maintain quality of fresh strawberry (Fragaria sp.)

Prayoga Byantara, Dianursanti

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The fruit is an important element of daily food but undergoes rapid deterioration due to their high metabolic activity. The edible coating on fruit is one alternative that can be used to improve quality and prolong shelf life. The edible coating can come from microalgae with high protein content, which is Spirulina platensis. Other materials needed are glycerol as a plasticizer to increase flexibility and elasticity and surfactant, which is carboxymethyl cellulose (CMC) as a thickener, stabilizer, and emulsifier. Strawberry (Fragaria sp.) was a sample fruit in this study. The condition of storage temperature is at the fridge temperature of about ± 4-7 °C. This study aims to obtain the appropriate microalgae concentration as the main ingredient in making edible coating to prolong strawberry's shelf life. In this study, what varied are the concentration of S. platensis microalgae, which are 0,5%, 0,75%, and 1% (w/v). There are three tests carried out: protein quantification on edible coating solution, physical properties (weight loss), and chemical properties (pH and vitamin C) on fruit. Based on this study, an edible coating that has the best effect on strawberries is 1% S. platensis with lower weight loss, pH level, and higher vitamin C content up to seven days of storage. With higher protein content, the use of 1% S. platensis with the temperature of ± 4-7 °C achieved the lowest weight loss at 5.21 ± 0.09%, the lowest pH value at 3.29 ± 0.06, and the highest vitamin C content at 37.51 ± 0.78 mg/100g in strawberries in the seventh day of storage.

Original languageEnglish
Title of host publication5th Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices
Subtitle of host publicationProceedings of the 5th International Symposium of Biomedical Engineering, ISBE 2020
EditorsKenny Lischer, Sugeng Supriadi, Siti Fauziyah Rahman, Yudan Whulanza
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735440869
DOIs
Publication statusPublished - 23 Mar 2021
Event5th International Symposium of Biomedical Engineering, ISBE 2020 - Depok, Virtual, Indonesia
Duration: 28 Jul 202029 Jul 2020

Publication series

NameAIP Conference Proceedings
Volume2344
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference5th International Symposium of Biomedical Engineering, ISBE 2020
Country/TerritoryIndonesia
CityDepok, Virtual
Period28/07/2029/07/20

Keywords

  • carboxymethyl cellulose (CMC)
  • edible coating
  • glycerol
  • microalgae
  • Spirulina platensis
  • strawberry

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