Stabilization of oil–water emulsions with protein concentrates from the microalga Tetradesmus obliquus

Lima, Viviane Sobreira; Oliveira, Davi Rocha Bernardes de; Silva, César Augusto Sodré da; Santana, Rejane de Castro; Soares, Nilda de Fátima Ferreira; Oliveira, Eduardo Basílio de; Martins, Márcio Arêdes; Coimbra, Jane Sélia dos Reis

doi:10.1007/s13197-023-05666-7

Cited by 8 publications

(10 citation statements)

References 37 publications

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“…The observed low lipid content (4.23 ± 0.21%), compared with that reported in the literature for T. obliquus [13,17,20], is probably due to the culture conditions and nutrients used [25]. The cultivation process affects the quantity of metabolites, such as lipids and proteins, that accumulate in cells [23][24][25].…”

Section: Composition Of T Obliquus Biomassmentioning

confidence: 67%

“…The microalgal biomass contained a high content of proteins (40.29 ± 0.24% w/w), which agrees with previous literature data for Tetradesmus spp. [13,20,21,37]. Thus, T. obliquus biomass is a strategic ingredient for the food industry since it is a potential alternative raw material for obtaining protein isolates and concentrates [20,21] that can be cultivated in large quantities for industrial feed applications in the food industry.…”

Section: Composition Of T Obliquus Biomassmentioning

confidence: 99%

“…[13,20,21,37]. Thus, T. obliquus biomass is a strategic ingredient for the food industry since it is a potential alternative raw material for obtaining protein isolates and concentrates [20,21] that can be cultivated in large quantities for industrial feed applications in the food industry.…”

Section: Composition Of T Obliquus Biomassmentioning

confidence: 99%

“…(i) are native Brazilian species abundant in aquatic environments; (ii) exhibit sizeable morphological variation within each species; (iii) exhibit a high growth rate; and (iv) contain 30% to 40% protein on a dry-mass basis [13,17]. The literature has also described the great potential of T. obliquus biomass for applications in the food, pharmaceutical, cosmetic, and biofuel industries [13,[17][18][19][20][21][22]. Silva et al [2] reported no toxic effects from the ingestion of T. obliquus biomass by Wistar rats.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Silva et al [2] reported that the consumption of T. obliquus reduced the triglyceride content (70%), atherogenic index (80%), and serum glucose concentration (42%) in Wistar rats, even on a balanced diet. Lima et al [20] reported that lower concentrations (0.5% and 1.0% w/w) of T. obliquus protein concentrate (51.46% w/w) stabilized emulsions after 28 days of storage. Silva et al [21] observed that T. obliquus protein concentrate (63.14% w/w) could form stable emulsions that were resistant to pH shifts and tolerated high salt concentrations.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Cell Rupture Techniques for the Extraction of Proteins from the Microalgae Tetradesmus obliquus

da Silva,

Sibaja,

de Ramos Cizilio

et al. 2024

Phycology

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The high protein content of several microalgal species makes them attractive and unconventional candidates for use in the food and pharmaceutical industries. Due to the robust cell walls of microalgae, cell rupture is necessary to improve the extraction of intracellular proteins. Thus, choosing a suitable cell-breaking treatment before protein extraction is a vital downstream processing step. Additionally, it is necessary to use an effective technique for monitoring and measuring the impact of rupture treatments on microalgal cell walls. In our study, Tetradesmus obliquus cells were disrupted using three different mechanical rupture methods: high-pressure homogenization (HPH), ultrasound (US), and ball milling (BM). The ruptured biomass cells were counted, and soluble proteins were extracted and quantified. The cell-counting technique did not detect any differences between intact and damaged cells after BM treatment because the dye (erythrosine B) did not permeate the microalgal biomass accurately. The US treatment promoted the highest yield of total protein extraction (19.95%), while the highest yields in the HPH and BM treatments were 15.68% and 14.11%, respectively. Since the cell breakage method affects protein extraction from microalgal biomass, protein release can be used as a central indicator of the degree of cell disruption.

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