Application Of Selected Marine Microalgae In Thermoplastic Starch Production
Starch is increasingly used in many industrial applications and as a renewable energy resource. In this study, ten indigenous microalgae (freshwater and marine) were cultured and analyzed for their biochemical content. The results showed that Chlorella salina contained the highest starch of 4.92±...
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
2021
|
| Subjects: | |
| Online Access: | http://eprints.usm.my/55056/ http://eprints.usm.my/55056/1/SOOPNA%20AP%20PUSPANADAN%20-%20TESIS24.pdf |
| _version_ | 1848882975646679040 |
|---|---|
| author | Puspanadan, Soopna A/p |
| author_facet | Puspanadan, Soopna A/p |
| author_sort | Puspanadan, Soopna A/p |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Starch is increasingly used in many industrial applications and as a renewable
energy resource. In this study, ten indigenous microalgae (freshwater and marine)
were cultured and analyzed for their biochemical content. The results showed that
Chlorella salina contained the highest starch of 4.92±0.33%, followed by Spirulina
sp. (2.58±1.18%). Thus, C. salina and Spirulina sp. were selected to study the
effects of physical and chemical factors on their starch production. C. salina
produced a higher starch yield compared to Spirulina sp., (69.46 mg/L and 16.13
mg/L respectively), under optimum growth conditions of 32 ℃, red wavelength,
24L:0D (photoperiod) and 39 ppt (salinity), hence, C. salina was selected for further
investigation (chemical factors). On the other hand, the efficiency of different starch
extractions methods indicated that the ethanol boiling method (0.46g starch/g freezedry
biomass) was significantly better than the four other methods (ultrasonic liquid
shear, hotwater bath, alkaline cell lysis and bead vortexing) used. In addition, the
highest and the lowest starch yield of 46.4% and 12.8% were obtained by the ethanol
boiling method and alkaline cell lysis method, respectively. Thermoplastic starch
(TPS) film preparation was developed using the casting technique.
Thermogravimetric analysis indicated that commercial corn starch (CS) film showed
higher mass loss (81.24%) compared with the algae starch (AS) film (76.53%) and
melting temperatures differential scanning calorimetry (DSC) were observed to be
the highest for AS film at 320.24 ℃ whereas CS showed the lowest at 317.91 ℃. |
| first_indexed | 2025-11-15T18:43:27Z |
| format | Thesis |
| id | usm-55056 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:43:27Z |
| publishDate | 2021 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-550562022-09-30T11:32:41Z http://eprints.usm.my/55056/ Application Of Selected Marine Microalgae In Thermoplastic Starch Production Puspanadan, Soopna A/p T1-995 Technology(General) Starch is increasingly used in many industrial applications and as a renewable energy resource. In this study, ten indigenous microalgae (freshwater and marine) were cultured and analyzed for their biochemical content. The results showed that Chlorella salina contained the highest starch of 4.92±0.33%, followed by Spirulina sp. (2.58±1.18%). Thus, C. salina and Spirulina sp. were selected to study the effects of physical and chemical factors on their starch production. C. salina produced a higher starch yield compared to Spirulina sp., (69.46 mg/L and 16.13 mg/L respectively), under optimum growth conditions of 32 ℃, red wavelength, 24L:0D (photoperiod) and 39 ppt (salinity), hence, C. salina was selected for further investigation (chemical factors). On the other hand, the efficiency of different starch extractions methods indicated that the ethanol boiling method (0.46g starch/g freezedry biomass) was significantly better than the four other methods (ultrasonic liquid shear, hotwater bath, alkaline cell lysis and bead vortexing) used. In addition, the highest and the lowest starch yield of 46.4% and 12.8% were obtained by the ethanol boiling method and alkaline cell lysis method, respectively. Thermoplastic starch (TPS) film preparation was developed using the casting technique. Thermogravimetric analysis indicated that commercial corn starch (CS) film showed higher mass loss (81.24%) compared with the algae starch (AS) film (76.53%) and melting temperatures differential scanning calorimetry (DSC) were observed to be the highest for AS film at 320.24 ℃ whereas CS showed the lowest at 317.91 ℃. 2021-10 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/55056/1/SOOPNA%20AP%20PUSPANADAN%20-%20TESIS24.pdf Puspanadan, Soopna A/p (2021) Application Of Selected Marine Microalgae In Thermoplastic Starch Production. PhD thesis, Universiti Sains Malaysia.. |
| spellingShingle | T1-995 Technology(General) Puspanadan, Soopna A/p Application Of Selected Marine Microalgae In Thermoplastic Starch Production |
| title | Application Of Selected Marine Microalgae In Thermoplastic Starch Production |
| title_full | Application Of Selected Marine Microalgae In Thermoplastic Starch Production |
| title_fullStr | Application Of Selected Marine Microalgae In Thermoplastic Starch Production |
| title_full_unstemmed | Application Of Selected Marine Microalgae In Thermoplastic Starch Production |
| title_short | Application Of Selected Marine Microalgae In Thermoplastic Starch Production |
| title_sort | application of selected marine microalgae in thermoplastic starch production |
| topic | T1-995 Technology(General) |
| url | http://eprints.usm.my/55056/ http://eprints.usm.my/55056/1/SOOPNA%20AP%20PUSPANADAN%20-%20TESIS24.pdf |