Preparation of novel seaweed nanocomposite film from brown seaweeds Laminaria japonica and Sargassum natans

Doh, Hansol; Dunno, Kyle; Whiteside, William Scott

doi:10.1016/j.foodhyd.2020.105744

Cited by 79 publications

(62 citation statements)

References 50 publications

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“…EB exhibited a similar trend compared to the tensile strength and modulus of elasticity for both modified and unmodified film. The modified films denoted high EB compared to the unmodified films as the percent fibre loading was increased, which agrees with previous studies [31]. The optimum EB was achieved at 4% fibre loading.…”

Section: Wettability Of Macroalgae Kenaf Bast Cnf Biopolymer Filmsupporting

confidence: 91%

“…At this fibre loading, the highest reduction in the unmodified biopolymer film's hydrophilic property was also achieved. This could be attributed to the strong intermolecular bonding between the hydroxyl groups of the macroalgal CNF film with the silane, which reduced the moisture content due to the reduction of the free hydroxyl group biopolymer film [31]. However, beyond 4% fibre loading, the WCA increased for both modified and unmodified film due to the heterogeneous dispersion of CNF in the matrix due to unequal bonding of molecules in the biopolymer film [33].…”

Section: Wettability Of Macroalgae Kenaf Bast Cnf Biopolymer Filmmentioning

confidence: 99%

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Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent

et al. 2021

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Hydrophilic behaviour of carrageenan macroalgae biopolymer, due to hydroxyl groups, has limited its applications, especially for packaging. In this study, macroalgae were reinforced with cellulose nanofibrils (CNFs) isolated from kenaf bast fibres. The macroalgae CNF film was after that treated with silane for hydrophobicity enhancement. The wettability and functional properties of unmodified macroalgae CNF films were compared with silane-modified macroalgae CNF films. Characterisation of the unmodified and modified biopolymers films was investigated. The atomic force microscope (AFM), SEM morphology, tensile properties, water contact angle, and thermal behaviour of the biofilms showed that the incorporation of Kenaf bast CNF remarkably increased the strength, moisture resistance, and thermal stability of the macroalgae biopolymer films. Moreover, the films’ modification using a silane coupling agent further enhanced the strength and thermal stability of the films apart from improved water-resistance of the biopolymer films compared to unmodified films. The morphology and AFM showed good interfacial interaction of the components of the biopolymer films. The modified biopolymer films exhibited significantly improved hydrophobic properties compared to the unmodified films due to the enhanced dispersion resulting from the silane treatment. The improved biopolymer films can potentially be utilised as packaging materials.

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Section: Wettability Of Macroalgae Kenaf Bast Cnf Biopolymer Filmsupporting

confidence: 91%

Section: Wettability Of Macroalgae Kenaf Bast Cnf Biopolymer Filmmentioning

confidence: 99%

Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent

et al. 2021

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“…Among the molecules present in macroalgae, alginates and fucoidans mostly extracted from brown macroalgae, such as Sargassum natans , S. latifolium or L. japonica , have been repeatedly used for the developing of biodegradable films [ 172 , 173 , 174 ]. Even though brown algae are the main target for obtaining ingredients for creating films, red algae such as Gracilaria lemaneiformis has also demonstrated to possess a protein and polysaccharide composition with promising filming properties [ 175 ].…”

Section: Incorporation To the Food Industrymentioning

confidence: 99%

“…Even though brown algae are the main target for obtaining ingredients for creating films, red algae such as Gracilaria lemaneiformis has also demonstrated to possess a protein and polysaccharide composition with promising filming properties [ 175 ]. These bio packages have been differently designed using just algae-derived polysaccharides for the development of the film or algae extracts combined with other vegetal molecules such as chitosan [ 172 , 173 , 174 , 175 , 176 ]. The antimicrobial activity of algae polysaccharides can be reinforced with the presence of chitosan since it has been recognized to possess antimicrobial capacity [ 177 ].…”

Section: Incorporation To the Food Industrymentioning

confidence: 99%

Antibacterial Use of Macroalgae Compounds against Foodborne Pathogens

Silva

Lourenço-Lopes

et al. 2020

Antibiotics

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The search for food resources is a constant in human history. Nowadays, the search for natural and safe food supplies is of foremost importance. Accordingly, there is a renewed interest in eco-friendly and natural products for substitution of synthetic additives. In addition, microbial contamination of food products during their obtaining and distribution processes is still a sanitary issue, and an important target for the food industry is to avoid food contamination and its related foodborne illnesses. These diseases are fundamentally caused by certain microorganisms listed in this review and classified according to their Gram negative or positive character. Algae have proven to possess high nutritional value and a wide variety of biological properties due to their content in active compounds. Among these capabilities, macroalgae are recognized for having antimicrobial properties. Thus, the present paper revises the actual knowledge of microbial contaminants in the food industry and proposes antimicrobial algal compounds against those pathogenic bacteria responsible for food contamination as valuable molecules for its growth inhibition. The capacity of algae extracts to inhibit some major food pathogen growth was assessed. Moreover, the main applications of these compounds in the food industry were discussed while considering their favorable effects in terms of food safety and quality control.

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“…Bila dihubungkan dengan spektrum FTIR, puncak pada panjang gelombang 1630 cm -1 adanya ikatan hidrogen antarmolekul air (Gambar 4). Fenomena ini sama dengan yang dilakukan oleh Duhno et al pada bioplastik yang mengandung sargassum (Doh, Dunno, and Whiteside 2020). Selanjutnya dekomposisi terjadi pada kisaran 150 o C untuk sampel yang dihidrolisis selama 30 menit dan 130 o C untuk sampel yang lain.…”

Section: Pengaruh Waktu Dan Kecepatan Pengadukan Terhadap Karakter Prunclassified

Ekstraksi Dan Karakterisasi Mikroselulosa Dari Rumput Laut Coklat Sargassum Sp. Sebagai Bahan Penguat Bioplastik Film

Rahmi

Marpaung

Aulia³

et al. 2020

J. Kimia Kemasan

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EKSTRAKSI DAN KARAKTERISASI MIKROSELULOSA DARI RUMPUT LAUT COKLAT SARGASSUM SP. SEBAGAI BAHAN PENGUAT BIOPLASTIK FILM. Sargassum sp. merupakan rumput laut coklat yang banyak tumbuh disepanjang pantai Indonesia. Tujuan dari penelitian ini adalah mengekstraksi mikroselulosa dari rumput laut coklat Sargassum sp. yang diambil dipantai daerah Banten. Selulosa dan mikroselulosa diekstraksi melalui dua tahapan yaitu proses alkalinisasi dengan kalium hidroksida (KOH) dan dilanjutkan proses hidrolisis dengan asam sulfat (H2SO4). Variable konsentrasi optimal KOH untuk menghasilkan selulosa adalah 0,1%, 0,7% dan 1,3% (b/v), dengan karakterisasi gugus fungsi produk menggunakan Fourier-Transform Infra Red (FTIR). Hasilnya menunjukkan bahwa pola spektrum FTIR selulosa dengan alkalinisasi pada konsentrasi KOH 0,1% dan 0,7%, (b/v) berbeda dengan pola spektrum selulosa dengan konsentrasi KOH 1,3% b/v Optimalisasi proses hidrolisis untuk menghasilkan mikroselulosa dilakukan dalam H2SO4 1 M dengan variabel kecepatan pengadukan 1000 rpm, 1500 rpm, dan 2000 rpm serta variabel waktu proses 30 menit dan 90 menit. Spektrum FTIR mikroselulosa dari semua variabel menunjukkan pola yang sama. Bentuk permukaan selulosa hasil foto Scanning Electron Microscope (SEM) dengan pembesaran 100.000 kali terlihat seperti bulatan, sedangkan mikroselulosa berbentuk garis panjang. Penambahan mikroselulosa pada bioplastik pati tapioka/kitosan menghasilkan bioplastik yang lebih tahan terhadap air dibuktikan dengan sisa bioplastik lebih panjang dibanding blanko setelah direndam selama 8 hari.

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Preparation of novel seaweed nanocomposite film from brown seaweeds Laminaria japonica and Sargassum natans

Cited by 79 publications

References 50 publications

Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent

Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent

Antibacterial Use of Macroalgae Compounds against Foodborne Pathogens

Ekstraksi Dan Karakterisasi Mikroselulosa Dari Rumput Laut Coklat Sargassum Sp. Sebagai Bahan Penguat Bioplastik Film

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