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Journal articles on the topic 'Ulva'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Farhan, Andi M., Andi Zaky Hanifan, Rifqiyanti Ismi, Al Fikriyani, Chanifah T. Maulita, and Irene E. Rieuwpassa. "Potential extract of green algae (Ulva luctuca) as antimicrobial in mouthwash: literature review." Makassar Dental Journal 11, no. 3 (2022): 270–74. http://dx.doi.org/10.35856/mdj.v11i3.640.

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Green algae as one of the marine natural resources which is included in the main seaweed is found in many coastal areas of In-donesia. The bioactive component that acts as an antibacterial agent in green algae type Ulva lactuca is ulvan polysaccharide extract. Ulvan is a cell wall polysaccharide that accounts for 9-36% dry weight of Ulva biomass and is mainly composed of rhamnose sulfate, uronic acid (glucuronic acid and iduronic acid) and xylose. Polysaccharide ulvan extracted from Ulva lactuca can be one of the antimicrobial materials used in mouthwash in dentistry.

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2

Cindana Mo’o, Faradila Ratu, Gofarana Wilar, Hari Prasad Devkota, and Nasrul Wathoni. "Ulvan, a Polysaccharide from Macroalga Ulva sp.: A Review of Chemistry, Biological Activities and Potential for Food and Biomedical Applications." Applied Sciences 10, no. 16 (2020): 5488. http://dx.doi.org/10.3390/app10165488.

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The species of green macroalga belonging to the genus Ulva (family: Ulvaceae) are utilized in various fields, from food supplements to biomedical applications. Ulvan, a polysaccharide obtained from various Ulva species, has shown various biological activities, including antioxidant, anti-inflammatory, anticancer, antibacterial, and antiviral activities. To obtain the polysaccharide ulvan that can be utilized in various fields, it is necessary to understand the critical points that affect its physicochemical nature, the extraction procedures, and the mechanism of action for biological activitie

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3

Lailaturramadhini, Nova, Ating Yuniarti, Yunita Maimunah, Febriyani Eka Supriatin, Damang Suryanto, and Asep Ridwanudin. "comparison of Phytochemical Composition, Total Polysaccharides, and Highest Nutrient Content in Seaweed (Ulva lactuca) from Two Different Locations." Journal of Aquaculture and Fish Health 14, no. 2 (2025): 284–96. https://doi.org/10.20473/jafh.v14i2.70265.

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Ulva lactuca is a source of structurally diverse and highly valuable bioactive compounds. Its chemical composition includes carbohydrates (up to 60%), proteins (10% - 47%), lipids (1% - 3%), and bioactive compounds such as polyphenols, which exhibit antibacterial, antiviral, antioxidant, and immunomodulatory properties. Ulvan, a heteropolysaccharide present in its cell walls, is known for its antiviral, antioxidant, and antimicrobial properties. This study aims to identify the potential of Ulva lactuca as a source of nutrition and health benefits. The research is descriptive-exploratory, aimin

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4

Pari, Rizfi Fariz, Uju Uju, Safrina Dyah Hardiningtyas, et al. "Ulva Seaweed-Derived Ulvan: A Promising Marine Polysaccharide as a Sustainable Resource for Biomaterial Design." Marine Drugs 23, no. 2 (2025): 56. https://doi.org/10.3390/md23020056.

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Green seaweed is currently underused compared with other major seaweed types. Many scientists have reported applications of the green seaweed Ulva in various fields in recent years, which makes it a candidate for biomass production in industrial biorefineries. Ulva contains a unique polysaccharide called ulvan, which is being considered for medicinal and pharmacological applications. Ulvan is a sulfated polysaccharide including rhamnose and glucuronic acid residues, which has a range of bioactivities, including immunomodulatory, antimicrobial, and anticoagulant properties. The biocompatibility

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5

Rocha, Jamilly Sousa, Daniele Santos, Mateus Aranha Martins, et al. "Sea lettuce (Ulva ohnoi) cultivation in biofloc technology: growth performance and characterization of bioactive compounds." Boletim do Instituto de Pesca 49 (November 17, 2023): e848-e848. http://dx.doi.org/10.20950/1678-2305/bip.2023.49.e848.

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This work evaluated the biofloc technology cultivation of Ulva ohnoi on its growth performance and biocompounds contents. Ulva ohnoi was cultivated under an initial density of 6 g·L-1 for 28 days using water from a biofloc tank which was exchanged daily at a 90% rate. Temperature, salinity, and illuminance were measured daily. Algae growth and their density was adjusted weekly. Results showed an average plant growth of 1.15%·day-1 (49.5 g·week-1). A significant difference was observed when comparing the initial (2.64 ± 0.3%) and final (4.62 ± 0.2%) ulvan concentration, in addition to a protein

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6

Ottolina, Gianluca, Federica Zaccheria, and Jacopo Paini. "Resource Recovery from Green Tide Biomass: Sustainable Cascading Biorefinery Strategies for Ulva spp." Biomass 5, no. 3 (2025): 41. https://doi.org/10.3390/biomass5030041.

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This review examines sustainable cascading biorefinery strategies for the green alga Ulva, which is globally prevalent in eutrophic marine waters and often forms extensive “green tides.” These blooms cause substantial environmental and economic damage to coastal communities. The primary target products within an Ulva biorefinery typically encompass salts, lipids, proteins, cellulose, and ulvan. Each of these components possesses unique properties and diverse applications, contributing to the economic robustness of the biorefinery. Salts can be repurposed for agricultural or even human consumpt

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7

Torres, Fernando G., and Adrian Urtecho. "Ulvan From <i>Ulva Nematoidea</i> as a Novel Active Surface Material for Triboelectric Nanogenerators." Detritus, no. 30 (March 20, 2025): 63–74. https://doi.org/10.31025/2611-4135/2025.19471.

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Marine algae represent an underutilized biomass resource. Biopolymers can be extracted from different types of algae. Alginates and carrageenans are among the most common biopolymers extracted from brown and red algae. They find applications in the food and biomaterials industries, among others. However, other available marine algae are not commercially exploited. For instance, green algae from the Ulvaceae family remain largely unexploited and have no industrial applications. In particular, Ulva species can serve as a promising source for the extraction of a biopolymer known as ulvan. This wo

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8

Reis, Renata Perpetuo, Antônio Carlos Silva de Andrade, Ana Carolina Calheiros, Jéssica Carneiro Oliveira, and Beatriz Castelar. "Effects of extracts of two Ulva spp. seaweeds on tomato germination and seedling growth." Research, Society and Development 9, no. 11 (2020): e61691110174. http://dx.doi.org/10.33448/rsd-v9i11.10174.

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Brown seaweed extracts are commercially used as agricultural biostimulants, and the green macroalgae Ulva spp. has shown promise for that purpose. We evaluated the ideal dosage of U. lactuca ulvan and flour on seed germination invigoration and the effects of U. flexuosa and U. lactuca extracts on tomato seedling growth (Solanun lycopersicum). The germination recovery of aged seeds after the application of U. lactuca was evaluated by seed germination rates and seedling emergence. Greenhouse cultivated seedlings were irrigated with 0.2 and 0.4 g×L-1 of the flour, or an ulvan solution of Ulva spp

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9

Tran, Vy Ha Nguyen, Thuan Thi Nguyen, Hang Thi Thuy Cao, et al. "Sulfated polysaccharides of Green Algae: Chemical Composition and Antioxidant Activity <i>in vitro</i> of Fractionated Ulvans from <i>Ulva lactuca</i> and <i>Ulva papenfussii</i>." Vietnam Journal of Marine Science and Technology 25, no. 2 (2025): 207–20. https://doi.org/10.15625/1859-3097/22735.

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The study evaluated the chemical composition, molecular weight, and antioxidant activity of ulvan extracted from Ulva papenfussii and Ulva lactuca. The results revealed distinct differences in the monosaccharide composition, sulfate content, and uronic acid levels between ulvans from both species, with ulvan from U. papenfussii exhibiting higher levels of iduronic acid and sulfate (16.39 ± 0.45 %w/w and 28.46 + 3.63 %w/w). Ulvan was fractionated using anion exchange chromatography (DEAE) based on charge differences, yielding three main fractions from each species. This study is the first to an

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10

Shefer, Shai, Arthur Robin, Alexander Chemodanov, et al. "Fighting SARS-CoV-2 with green seaweed Ulva sp. extract: extraction protocol predetermines crude ulvan extract anti-SARS-CoV-2 inhibition properties in in vitro Vero-E6 cells assay." PeerJ 9 (November 15, 2021): e12398. http://dx.doi.org/10.7717/peerj.12398.

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Due to the global COVID-19 pandemic, there is a need to screen for novel compounds with antiviral activity against SARS-COV-2. Here we compared chemical composition and the in vitro anti- SARS-COV-2 activity of two different Ulva sp. crude ulvan extracts: one obtained by an HCl-based and another one by ammonium oxalate-based (AOx) extraction protocols. The composition of the crude extracts was analyzed and their antiviral activity was assessed in a cytopathic effect reduction assay using Vero E6 cells. We show that the extraction protocols have a significant impact on the chemical composition,

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11

Sivaprakash, G., K. Mohanrasu, V. Ananthi, et al. "Biodiesel production from Ulva linza, Ulva tubulosa, Ulva fasciata, Ulva rigida, Ulva reticulate by using Mn2ZnO4 heterogenous nanocatalysts." Fuel 255 (November 2019): 115744. http://dx.doi.org/10.1016/j.fuel.2019.115744.

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12

Minh Thu, Quach Thi. "EFFECT OF SULFATION ON THE STRUCTURE AND ANTICOAGULANT ACTIVITY OF ULVAN EXTRACTED FROM GREEN SEAWEED ULVA RETICULATA." Vietnam Journal of Science and Technology 54, no. 2C (2018): 373. http://dx.doi.org/10.15625/2525-2518/54/2c/11863.

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Ulvans are sulfated polysaccharides derived from the cell wall of green seaweeds. Thechemical structure of ulvan extracted from Ulva reticulata is reported, focusing on investigationof the sulfated modification of the ulvan and the changes in structure and anticoagulant activity.The results showed that sulfated modification was able to change the ulvan conformationalstructure and markedly enhance its anticoagulant activity.

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13

Adrien, Amandine, Antoine Bonnet, Delphine Dufour, Stanislas Baudouin, Thierry Maugard, and Nicolas Bridiau. "Anticoagulant Activity of Sulfated Ulvan Isolated from the Green Macroalga Ulva rigida." Marine Drugs 17, no. 5 (2019): 291. http://dx.doi.org/10.3390/md17050291.

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(1) Background: Brown and red algal sulfated polysaccharides have been widely described as anticoagulant agents. However, data on green algae, especially on the Ulva genus, are limited. This study aimed at isolating ulvan from the green macroalga Ulva rigida using an acid- and solvent-free procedure, and investigating the effect of sulfate content on the anticoagulant activity of this polysaccharide. (2) Methods: The obtained ulvan fraction was chemically sulfated, leading to a doubling of the polysaccharide sulfate content in a second ulvan fraction. The potential anticoagulant activity of bo

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14

Panjaitan, Pola S. T., Catur Pramono Adi, Aripudin Aripudin, Suratna Suratna, and Ida Romawati. "PEMBUATAN RENGGINANG SINGKONG DENGAN PENAMBAHAN TEPUNG RUMPUT LAUT (Ulva Lactuca)." Grouper 14, no. 1 (2023): 15–23. http://dx.doi.org/10.30736/grouper.v14i1.125.

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DalamÂ pembuatanÂ rengginang tidak ada penambahan zat gizi sehingga kandungan nutrisi di rengginang itu rendah, salahÂ satunya kandungan protein. Maka dari itu dengan adanya potensi rumput laut ulva lactuca dapatÂ dimanfaatkan sebagai upaya meningkatkan kandungan gizi protein rengginang singkong. Tujuan padaÂ penelitianÂ iniÂ yaitu:MengetahuiÂ caraÂ pembuatanÂ rengginangÂ singkongÂ denganÂ penambahanÂ tepungrumput laut ulva lactuca; Mengetahui pengaruh penambahan tepung rumput laut ulva lactuca terhadapÂ mutu hedonik rengginang singkong; dan Mengetahui pengaruh kandungan proksimat pada renggin

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15

Jacoeb, Agoes Mardiono, Asadatun Abdullah, and Siti Nur Hakimah. "Potensi ulvan dari Ulva lactuca sebagai sumber antioksidan." Jurnal Pengolahan Hasil Perikanan Indonesia 27, no. 3 (2024): 242–51. http://dx.doi.org/10.17844/jphpi.v27i3.46950.

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Dinding sel Ulva lactuca menghasilkan ulvan yang merupakan hidrokoloid bersulfat dan berpotensi sebagai antioksidan. Penelitian ini bertujuan untuk menentukan pengaruh lama pemanasan dalam autoklaf (15 dan 20 menit; 121℃) terhadap rendemen, kadar gula dan sulfat, serta aktivitas antioksidan ulvan. Rendemen ulvan, kandungan gula dan sulfat diukur masing-masing dengan metode gravimetri dan spektrofotometri. Ekstrak kering oven diuji gugus fungsi dan antioksidannya menggunakan FTIR dan metode DPPH. Ulvan hanya bisa dihasilkan melalui ekstraksi pada suhu 121℃ waktu 15 menit. Ekstrak kering ulvan m

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16

Chávez-Sánchez, Tonatiuh, Alejandra Piñón-Gimate, James T. Melton III, Juan Manuel López-Bautista, and Margarita Casas-Valdez. "First report, along with nomenclature adjustments, of Ulva ohnoi, U. tepida and U. torta (Ulvaceae, Ulvales, Chlorophyta) from northwestern Mexico." Botanica Marina 62, no. 2 (2019): 113–23. http://dx.doi.org/10.1515/bot-2018-0007.

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Abstract Examining morphological and anatomical characters, eight bloom-forming Ulva species were identified from La Paz Bay, Gulf of California, Mexico. However, DNA sequencing, using a multi-gene approach (rbcL, ITS2 and tufA) revealed that, of the eight species, four species were genetically distinct, none of which belonged to the species they would have been ascribed based on morpho-anatomical observations. The Ulva lactuca and Ulva rigida morphotypes (blades two cells thick, unbranched, attached by a small discoid holdfast) corresponded to Ulva ohnoi; the Ulva intestinalis morphotype (tub

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17

Fort, Antoine, Morgane Lebrault, Margot Allaire, et al. "Extensive Variations in Diurnal Growth Patterns and Metabolism Among Ulva spp. Strains." Plant Physiol . 180, no. 1 (2019): 109.123. https://doi.org/10.1104/pp.18.01513.

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Green macroalgae of the genus <em>Ulva</em> play a key role in coastal ecosystems and are of increasing commercial importance. However, physiological differences between strains and species have yet to be described in detail. Furthermore, the strains of <em>Ulva</em> used in aquaculture usually originate from opportunistic collection in the wild without prior selection of best performing strains. Hence, efforts are required to detect the potential variability in growth and metabolic accumulation between <em>Ulva</em> strains and ultimately select the best performing strains under given environ

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18

Phillips, JA. "Field, anatomical and development studies on southern Australian species of Ulva (Ulvaceae, Chlorophyta)." Australian Systematic Botany 1, no. 4 (1988): 411. http://dx.doi.org/10.1071/sb9880411.

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Populations of Ulva growing in southern Australia were examined to ascertain the taxonomic value of the range of morphological and anatomical characteristics. Cell shape and chlorplast position, as seen in transverse section of the basal region of the thallus, proved to be non-viable characters which separate the species from each other. In culture, the morphology of mature plant is constant and characteristic for each species and thus confirms the validity of the species as defined by anatomical differences. Five species of Ulva (Ulva fasciata Delile, Ulva lactuca L., Ulva laetevirens Arescho

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19

Hamouda, Ragaa A., Fauzia A. K. Qarabai, Fathi S. Shahabuddin, Turki M. Al-Shaikh, and Rabab R. Makharita. "Antibacterial Activity of Ulva/Nanocellulose and Ulva/Ag/Cellulose Nanocomposites and Both Blended with Fluoride against Bacteria Causing Dental Decay." Polymers 15, no. 4 (2023): 1047. http://dx.doi.org/10.3390/polym15041047.

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One of the most prevalent chronic infectious disorders is tooth decay. Acids produced when plaque bacteria break down sugar in the mouth cause tooth decay. Streptococcus mutans and Lactobacillus acidophilus are the most prominent species related to dental caries. Innovative biocidal agents that integrate with a biomaterial to prevent bacterial colonization have shown remarkable promise as a result of the rapid advancement of nanoscience and nanotechnology. In this study, Ulva lactuca was used as a cellulose source and reducing agent to synthesize nanocellulose and Ulva/Ag/cellulose/nanocomposi

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Sinurat, Ellya, Dina Fransiska, Sihono Sihono, and Rinta Kusumawati. "Efek Pemberian Biskuit Ulva terhadap Penurunan Kadar Glukosa Darah Tikus yang Diinduksi Sukrosa." Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan 16, no. 1 (2021): 63. http://dx.doi.org/10.15578/jpbkp.v16i1.682.

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Rumput laut Ulva sp. memiliki kandungan serat pangan tinggi yang diketahui memiliki aktivitas hipoglikemik. Penelitian ini telah melakukan penambahan Ulva sp. pada biskuit sebagai makanan sehat yang kaya serat pangan. Tujuan penelitian untuk mengetahui pengaruh pemberian biskuit Ulva terhadap penurunan kadar glukosa darah pada tikus jantan yang diinduksi sukrosa jenuh. Selain itu, diamati profil hematologi dan biokimia klinis darah sebelum dan setelah pemberian biskuit Ulva. Uji antidiabetes dilakukan menggunakan uji toleransi glukosa oral terhadap tikus jantan yang diinduksi sukrosa jenuh. Bi

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21

Xia, Jing, Peimin He, Jinlin Liu, et al. "Comparing Complete Mitochondrion Genome of Bloom-forming Macroalgae from the Southern Yellow Sea, China." E3S Web of Conferences 233 (2021): 02037. http://dx.doi.org/10.1051/e3sconf/202123302037.

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The green tide in the Southern Yellow Sea which has been erupting continuously for 14 years. Dominant species of the free-floating Ulva in the early stage of macroalgae bloom were Ulva compressa, Ulva flexuosa, Ulva prolifera, and Ulva linza along the coast of Jiangsu Province. In the present study, we carried out comparative studies on complete mitochondrion genomes of four kinds of bloom-forming green algae, and provided standard morphological characteristic pictures of these Ulva species. The maximum likelihood phylogenetic analysis showed that U. linza is the closest sister species of U. p

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22

Adlikahfi, Adlikahfi, Ria Azizah Tri Nuraini, and AB Susanto. "Pengaruh Makroalga Ulva lactuca Sebagai Bahan Tambahan Pakan Terhadap Pertumbuhan Ikan Nila." Journal of Marine Research 14, no. 2 (2025): 210–16. https://doi.org/10.14710/jmr.v14i2.42352.

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Ulva lactuca merupakan makroalga dengan kandungan nutrisi yang tinggi sehingga berpotensi sebagai bahan tambahan pakan ikan nila. Ikan nila merupakan komoditas dengan nilai ekonomi yang tinggi. Tujuan penelitian ini adalah untuk mengetahui Ulva lactuca sebagai tambahan pakan ikan dan pengaruh pada pertumbuhan ikan nila, meliputi panjang dan berat ikan nila. Hewan uji yang digunakan adalah ikan nila dengan berat 1-3 gr dan panjang 4-6 gr. Penelitian ini menggunakan metode Rancangan Acak Lengkap (RAL) yang terdiri atas 3 perlakuan, yaitu 6% Ulva lactuca (perlakuan B), 12% Ulva lactuca (perlakuan

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Utama, Mochhamad Ikhsan Cahya, Nurani Khoerunnisa, and Lady Ayu Sri Wijayanti. "Penggunaan Tepung Ulva (Ulva Lactuca) dan Tepung Ekstrak Enzim Kasar Papain sebagai Bahan Baku Tambahan bagi Pakan Benih Ikan Lele (Clarias Sp.)." Proceedings Series on Physical & Formal Sciences 8 (March 13, 2025): 191–97. https://doi.org/10.30595/pspfs.v8i.1494.

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Penelitian ini bertujuan untuk mengevaluasi pengaruh penggunaan tepung Ulva (Ulva lactuca) dan tepung Ekstrak Enzim Kasar Papain sebagai feed additive pada pakan benih ikan lele (Clarias sp.) terhadap kinerja pertumbuhan, FCR, dan tingkat kelangsungan hidup. Parameter yang dianalisis meliputi Laju Pertumbuhan Harian (LPH), Specific Growth Rate (SGR) berdasarkan bobot (SGR W) dan panjang (SGR L), Feed Conversion Ratio (FCR), serta Survival Rate (SR). Hasil penelitian menunjukkan bahwa penambahan tepung Ulva dan tepung ekstrak enzim kasar papain memberikan peningkatan signifikan dibandingkan kon

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Simon, Clara, Marcus McHale, and Ronan Sulpice. "Applications of Ulva Biomass and Strategies to Improve Its Yield and Composition: A Perspective for Ulva Aquaculture." Biology 11, no. 11 (2022): 1593. http://dx.doi.org/10.3390/biology11111593.

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Sea lettuce (Ulva spp.), with its worldwide distribution and remarkable ability to grow rapidly under various conditions, represents an important natural resource that is still under-exploited. Its biomass can be used for a wide range of applications in the food/feed, pharmaceutical, nutraceutical, biofuel, and bioremediation industries. However, knowledge of the factors affecting Ulva biomass yield and composition is far from complete. Indeed, the respective contributions of the microbiome, natural genetic variation in Ulva species, environmental conditions and importantly, the interactions b

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El-Gendy, Nour Sh, Hussein N. Nassar, Abdallah R. Ismail, et al. "A Fully Integrated Biorefinery Process for the Valorization of Ulva fasciata into Different Green and Sustainable Value-Added Products." Sustainability 15, no. 9 (2023): 7319. http://dx.doi.org/10.3390/su15097319.

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In the framework of a sustainable marine bioeconomy, the present work describes an advanced, eco-friendly, fully integrated biorefinery process for marine Ulva fasciata macroalgae. That would serve as a solution for ecosystem bioremediation, an effective utilization of marine macroalgal resources, and a new initiative to promote a green and low-carbon economy. Ulva fasciata biomass can be utilized as an organic fertilizer with total N, P2O5, and K2O contents of 3.17% and a C/N ratio of 11.71. It can also be used as a solid biofuel with a sufficient calorific value of 15.19 MJ/kg. It has high c

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Olsson, Joakim, Gunilla B. Toth, Annelous Oerbekke, et al. "Cultivation conditions affect the monosaccharide composition in Ulva fenestrata." Journal of Applied Phycology 32, no. 5 (2020): 3255–63. http://dx.doi.org/10.1007/s10811-020-02138-9.

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Abstract In recent years, the interest in using seaweed for the sustainable production of commodities has been increasing as seaweeds contain many potentially worthwhile compounds. Thus, the extraction and refining processes of interesting compounds from seaweeds is a hot research topic but has been found to have problems with profitability for novel applications. To increase the economic potential of refining seaweed biomass, the content of the compounds of interest should be maximized, which can potentially be achieved through optimization of cultivation conditions. In this study, we studied

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Turan, Gamze, Andrezza Carvalho Chagas, César S. B. Costa, Wilson F. B. Wasielesky Jr., and Luís H. da Silva Poersch. "Impact of the co-cultivation of macroalgae (Ulva lactuca f. fasciata) on the composition of biofloc in a zero water exchange system used for rearing Pacific white shrimp (Litopenaeus vannamei) (Decapoda, Dendrobranchiata)." Crustaceana 97, no. 1-2 (2024): 125–36. http://dx.doi.org/10.1163/15685403-bja10363.

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Abstract In a closed, or zero water exchange, greenhouse aquaculture system, this study examined the interaction between the aggregation flocs in the mono- and co-cultivation of Pasific white shrimp, Litopenaeus vannamei (300 individuals/m3) with macroalgae, Ulva lactuca f. fasciata at different densities of Ulva (1, 2 and 3 g/l). The investigation was conducted under zero water exchange conditions. The accumulated flocs were compared between the various treatment groups: without Ulva (Treatment Control Group), Ulva at 1 g/l density (T1: Treatment 1), Ulva at 2 g/l (T2: Treatment 2), and Ulva

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Glasson, Christopher R. K., Cara A. Luiten, Susan M. Carnachan, et al. "Structural characterization of ulvans extracted from blade (Ulva ohnoi) and filamentous (Ulva tepida and Ulva prolifera) species of cultivated Ulva." International Journal of Biological Macromolecules 194 (January 2022): 571–79. http://dx.doi.org/10.1016/j.ijbiomac.2021.11.100.

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Shomron, Alon, Danielle Duanis-Assaf, Ortal Galsurker, Alexander Golberg, and Noam Alkan. "Extract from the Macroalgae Ulva rigida Induces Table Grapes Resistance to Botrytis cinerea." Foods 11, no. 5 (2022): 723. http://dx.doi.org/10.3390/foods11050723.

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Fungal pathogens are a central cause of the high wastage rates of harvested fruit and vegetables. Seaweeds from the genus Ulva are fast-growing edible green macroalgae whose species can be found on the shore of every continent, and therefore present a resource that can be utilized on a global scale. In this study, we found that the application of ulvan extract, a sulfated polysaccharide extracted from Ulva rigida (1000 mg/L), elicited table grapes defense and reduced the incidence and decay area of Botrytis cinerea by 43% and 41%, respectively. In addition, compared to the control group at two

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Putri, Ryana Tammi. "Pemanfaatan Gagang Hijau (Ulva Latuca L.) untuk Kehidupan Manusia." Jurnal Agricultural Biosystem Engineering 4, no. 1 (2025): 32. https://doi.org/10.23960/jabe.v4i1.10732.

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Indonesia is an archipelago with a long coastline. This condition has the potential to produce green stems (Ulva latuca). Ulva Latuca is a plant containing 25-26% ash. This illustrates that the mineral content of ulva latuca is quite high, so this plant has the potential to produce several minerals that are useful for health, have antioxidant, antibacterial, antifungal, anti-inflammatory properties and can be used as a face mask. The potential of ulva latuca allows this plant to receive special attention to be developed and also developed equipment in the process of utilizing several minerals

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Widowaty, Windy, Yopi Setiawan, and Wildan Wibawa Perdana. "AKTIVITAS ANTIOKSIDAN EKSTRAK METANOL Gracilaria sp. DAN Ulva sp. DARI PANTAI SAYANG HEULANG." AGROSCIENCE (AGSCI) 10, no. 2 (2020): 203. http://dx.doi.org/10.35194/agsci.v10i2.1163.

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Rumput laut atau makro alga merupakan sudah sejak lama di Indonesia dikenal sebagai bahan makanan tambahan, sayuran dan obat tradisional. Gracilaria sp mengandung banyak metabolit seperti : karoten, terpenoid, xantofil, klorofil, vitamin, dan beberapa senyawa antioksidan sementara senyawa bioaktif tersebut terkandung pada Ulva sp yang disebut dengan istilah ulvan, yaitu Sulfated Polysaccharide. Kedua jenis rumput laut tersebut banyak ditemukan di pantai Sayang Heulang, Garut Jawa Barat. Antioksidan yang terkandung dalam Ulva sp bersifat alami, tidak seperti antioksidan sintetis, seperti Butyla

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Ulaan, Gia Aprilia Kartini, Adithya Yudistira, and Henki Rotinsulu. "UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL ALGA Ulva lactuca MENGGUNAKAN METODE DPPH (1,1 diphenyl-2-picrylhydrazyl)." PHARMACON 8, no. 3 (2019): 535. http://dx.doi.org/10.35799/pha.8.2019.29327.

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Ulva lactuca Algae habitat was found in shallow marine waters and its morphology is thin and flat thallus. Ulva lactuca Algae, known as sea lettuce, contains a lot of chlorophyll in its cells. Chlorophyll has the ability as a free radical scavenger and also has antioxidant activity. Antioxidants are compounds that could inhibit oxidation reactions by binding to free radicals and highly reactive molecules. This study was conducted to determine the antioxidant activity of ethanol extract of Algae Ulva lactuca obtained from the Lembeh Strait, Bitung City. Ulva lactuca Algae was extracted by macer

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García-Márquez, Jorge, Bruna Rodrigues Moreira, Piedad Valverde-Guillén, et al. "In Vitro and In Vivo Effects of Ulvan Polysaccharides from Ulva rigida." Pharmaceuticals 16, no. 5 (2023): 660. http://dx.doi.org/10.3390/ph16050660.

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One of the main bioactive compounds of interest from the Ulva species is the sulfated polysaccharide ulvan, which has recently attracted attention for its anticancer properties. This study investigated the cytotoxic activity of ulvan polysaccharides obtained from Ulva rigida in the following scenarios: (i) in vitro against healthy and carcinogenic cell lines (1064sk (human fibroblasts), HACAT (immortalized human keratinocytes), U-937 (a human leukemia cell line), G-361 (a human malignant melanoma), and HCT-116 (a colon cancer cell line)) and (ii) in vivo against zebrafish embryos. Ulvan exhibi

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NG, YU FEI, and DANWEI HUANG. "Species diversity and phylogeny of the green macroalga Ulva (Ulvophyceae, Chlorophyta) in Singapore." Phytotaxa 662, no. 1 (2024): 67–79. http://dx.doi.org/10.11646/phytotaxa.662.1.5.

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The green macroalgal genus Ulva (Ulvaceae, Ulvophyceae, Chlorophyta) is commonly found in coastal ecosystems and confers many important marine ecological services. Despite prior research interest and recent advancements in Ulva taxonomy, in many parts of the world, its species diversity remains unresolved due to a high degree of morphological variation and phenotypic plasticity. DNA barcoding and phylogenetic approaches can potentially assist in identifying Ulva species precisely. Here, we analysed chloroplast tufA, rbcL and nuclear ITS from 49 Ulva specimens from Singapore. Gross and microsco

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Ni Luh Linda Sukrawati, Putu Oka Samirana, and Anak Agung Gede Rai Yadnya Putra. "Kandungan Fitokimia dan Aktivitas Farmakologi dari Ulva lactuca." Prosiding Workshop dan Seminar Nasional Farmasi 3 (June 8, 2025): 155–64. https://doi.org/10.24843/wsnf.2024.v03.p15.

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Ulva lactuca adalah salah satu alga laut yang termasuk ke dalam genus Ulva dan keluarga Ulvaceae. Ulva lactuca memiliki komposisi kimia bernilai ekonomis tinggi yang dapat membuka peluang pemanfaatan dalam aplikasi kosmetik, farmasi, kimia, makanan, dan energi. Artikel ulasan ini bertujuan untuk memeriksa profil fitokimia dan aktivitas farmakologi dari Ulva lactuca. Pencarian data diperoleh dari jurnal internasional dan nasional melalui website dan database berbasis ilmiah yaitu PubMed dan Google Scholar. Berdasarkan literatur yang telah dikumpulkan, terdapat sebanyak 7 artikel yang memenuhi k

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Ning, Limin, Zhong Yao, and Benwei Zhu. "Ulva (Enteromorpha) Polysaccharides and Oligosaccharides: A Potential Functional Food Source from Green-Tide-Forming Macroalgae." Marine Drugs 20, no. 3 (2022): 202. http://dx.doi.org/10.3390/md20030202.

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The high-valued utilization of Ulva (previously known as Enteromorpha) bioresources has drawn increasing attention due to the periodic blooms of world-wide green tide. The polysaccharide is the main functional component of Ulva and exhibits various physiological activities. The Ulva oligosaccharide as the degradation product of polysaccharide not only possesses some obvious activities, but also possesses excellent solubility and bioavailability. Both Ulva polysaccharides and oligosaccharides hold promising potential in the food industry as new functional foods or food additives. Studies on Ulv

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Afanasyev, D. F., and Sh R. Abdullin. "On a new vegetation association of the Black Sea pseudolittoral zone." Vegetation of Russia, no. 23 (2013): 3–8. http://dx.doi.org/10.31111/vegrus/2013.23.3.

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A new association of macrophytic algae Ulvo compressae–Cladophoretum albidae of the Russian Black Sea pseudolittoral zone is described. The association seems to be related to the alliance Ralfsion verrucosae Giaccone 1993. The diagnostic species of the association are Ulva compressa and Cladophora albida. Two variants of the association have been described. Diagnoses of the association and its variants are given.

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Mahasu, Nur Hikma, Dedi Jusadi, Mia Setiawati, and I. Nyoman Adi Asmara Giri. "POTENTIAL USE OF Ulva lactuca AS FEED INGREDIENT FOR TILAPIA." Jurnal Ilmu dan Teknologi Kelautan Tropis 8, no. 1 (2016): 259–67. http://dx.doi.org/10.29244/jitkt.v8i1.13089.

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Due to the mainly imported for fish feed ingredients in Indonesia, many attemps have been made to discover local potential ingredients to reduce the utilization of imported ingredients. In this experiment, the utilization of Ulva lactuca as feed ingredient for tilapia was evaluated. Experiment 1 was conducted to determine the digestibility of Ulva for tilapia. In experiment 2 and 3, Ulva was used to substitute wheat pollard of either 0, 3, 6, 9, or 12 % in the feed formulation. In experiment 2, fish with an average body weight of 4.1±0.15 g were fed on those diets, and were cultured for 55 day

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Chatzoglou, Evanthia, Panorea Kechagia, Aristeidis Tsopelakos, and Helen Miliou. "Co-culture of Ulva sp. and Dicentrarchus labrax in Recirculating Aquaculture System: effects on growth, retention of nutrients and fatty acid profile." Aquatic Living Resources 33 (2020): 19. http://dx.doi.org/10.1051/alr/2020023.

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European sea bass and Ulva sp. were co-cultured in different tanks of an indoor Recirculating Aquaculture System (Ulva-RAS) with bacterial biofilter, in an effort to optimize the efficiency of the system and to further decrease the waste effluent. A system with similar culture conditions, without Ulva, was used as a control-RAS to elucidate integration effects on growth performance and chemical composition of sea bass. The role of Ulva on N and P concentrations, gas (O2, CO2) and pH in water was also investigated. Fish were fed a diet of fish oil replacement (55%) with a mixture of rapeseed oi

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Tran, Vy Ha Nguyen, Maria Dalgaard Mikkelsen, Hai Bang Truong, et al. "Structural Characterization and Cytotoxic Activity Evaluation of Ulvan Polysaccharides Extracted from the Green Algae Ulva papenfussii." Marine Drugs 21, no. 11 (2023): 556. http://dx.doi.org/10.3390/md21110556.

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Ulvan, a sulfated heteropolysaccharide with structural and functional properties of interest for various uses, was extracted from the green seaweed Ulva papenfussii. U. papenfussii is an unexplored Ulva species found in the South China Sea along the central coast of Vietnam. Based on dry weight, the ulvan yield was ~15% (w/w) and the ulvan had a sulfate content of 13.4 wt%. The compositional constitution encompassed L-Rhamnose (Rhap), D-Xylose (Xylp), D-Glucuronic acid (GlcAp), L-Iduronic acid (IdoAp), D-Galactose (Galp), and D-Glucose (Glcp) with a molar ratio of 1:0.19:0.35:0.52:0.05:0.11, r

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Perdani, A. W., N. Ratnaningsih, I. Chayati, and N. N. Utami. "Nutritional, physicochemical and sensory evaluation of biscuits enriched with Ulva sp. from Gunungkidul coast." Food Research 8, Supplementary 2 (2024): 22–29. http://dx.doi.org/10.26656/fr.2017.8(s2).34.

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Ulva sp. a seaweed commonly found on Gunungkidul coast, had the potential as a source of functional food that contained high antioxidants, protein and dietary fiber. Ulva sp. was developed into biscuits, one of the most popular foods in Indonesia. This study aimed to investigate the physicochemical and sensory evaluation of biscuits enriched with Ulva sp. The nutritional value, antioxidant activity, dietary fiber, texture, color, appearance and sensory evaluation were studied. Ulva sp. was collected from Gunungkidul coast and treated using 5% lime for fishy-smell removal, then dried to produce

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Azhar, Nuril, Ervia Yudiati, Ambariyanto, and Agus Trianto. "The Effect of Enhancing Ulvan's Antioxidant Properties in Supplemented Diets on Accelerating The Phenoloxidase Immune Response in White Shrimp." HAYATI Journal of Biosciences 31, no. 6 (2024): 1116–29. http://dx.doi.org/10.4308/hjb.31.6.1116-1129.

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This study investigated the total phenol content (TPC) and DPPH inhibition of ulvan from Ulva lactuca, along with its supplementation effects on the specific growth rate (SGR) and phenoloxidase (PO) activity of Litopenaeus vannamei. Ulva lactuca samples were processed to obtain four ulvan extracts using different methods such as P-HWE (Polysaccharide-Hot Water Extract), O-HWE (Oligosaccharide-Hot Water Extract), P-A-HWE (Polysaccharide-Acid-Hot Water Extract), and O-A-HWE (Oligosaccharide-Acid-Hot Water Extract). The U. lactuca powder was treated with 80% ethanol overnight, then centrifuged an

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Obolski, Uri, Thomas Wichard, Alvaro Israel, Alexander Golberg, and Alexander Liberzon. "Modeling the growth and sporulation dynamics of the macroalga <i>Ulva</i> in mixed-age populations in cultivation and the formation of green tides." Biogeosciences 19, no. 8 (2022): 2263–71. http://dx.doi.org/10.5194/bg-19-2263-2022.

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Abstract. Ulva is a widespread green algal genus with important ecological roles and promising potential as a seagriculture crop. One of the major challenges when cultivating Ulva is sudden biomass disappearance, likely caused by uncontrolled and unpredicted massive sporulation. However, the dynamics of this process are still poorly understood. In this study, we propose a mathematical model describing the biomass accumulation and degradation of Ulva, considering the potential impact of sporulation inhibitors. We developed a differential equation model describing the time evolution of Ulva biom

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Le, Bao, Kirill S. Golokhvast, Seung Hwan Yang, and Sangmi Sun. "Optimization of Microwave-Assisted Extraction of Polysaccharides from Ulva pertusa and Evaluation of Their Antioxidant Activity." Antioxidants 8, no. 5 (2019): 129. http://dx.doi.org/10.3390/antiox8050129.

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The use of green marine seaweed Ulva spp. as foods, feed supplements, and functional ingredients has gained increasing interest. Microwave-assisted extraction technology was employed to improve the extraction yield and composition of Ulva pertusa polysaccharides. The antioxidant activity of ulvan was also evaluated. The impacts of four independent variables, i.e., extraction time (X1, 30 to 60 min), power (X2, 500 to 700 W), water-to-raw-material ratio (X3, 40 to 70), and pH (X4, 5 to 7) were evaluated. The chemical structure of different polysaccharides fractions was investigated via FT-IR an

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Hasnadewi, Ashfiya Hanif, Mulyati Mulyati, Ardaning Nuriliani, and Fajar Sofyantoro. "In Vivo Evaluation of Heavy Metal Decontaminated Marine Macroalgae (Ulva lactuca L.) Using Bilimbi (Averrhoa bilimbi) Juice and Its Potency As Nephroprotector." Indonesian Food and Nutrition Progress 20, no. 1 (2023): 1. http://dx.doi.org/10.22146/ifnp.85312.

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Ulva lactuca is a functional food ingredient with high antioxidant content. The presence of heavy metal contaminants in natural Ulva lactuca needs to be eliminated. Ulva lactuca was investigated for its potential as a nephroprotector in female Wistar rats. The study assessed Blood Urea Nitrogen (BUN) levels, creatinine levels, and kidney histopathology. The experiment included a Group I (control), Group II (administered 1000 mg/Kg BW/day of natural Ulva lactuca), and Group III (administered 1000 mg/Kg BW/day of heavy metal decontaminated Ulva lactuca using bilimbi juice). After 30 days of oral

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Huang, Ailan, Xinming Wu, Fuping Lu, and Fufeng Liu. "Sustainable Production of Ulva Oligosaccharides via Enzymatic Hydrolysis: A Review on Ulvan Lyase." Foods 13, no. 17 (2024): 2820. http://dx.doi.org/10.3390/foods13172820.

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Ulvan is a water-soluble sulfated polysaccharide extracted from the green algae cell wall. Compared with polysaccharides, oligosaccharides have drawn increasing attention in various industries due to their enhanced biocompatibility and solubility. Ulvan lyase degrades polysaccharides into low molecular weight oligosaccharides through the β-elimination mechanism. The elucidation of the structure, catalytic mechanism, and molecular modification of ulvan lyase will be helpful to obtain high value-added products from marine biomass resources, as well as reduce environmental pollution caused by the

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Madany, Marwa A., Mohamed S. Abdel-Kareem, Affaf K. Al-Oufy, Medhat Haroun, and Salah A. Sheweita. "The biopolymer ulvan from Ulva fasciata: Extraction towards nanofibers fabrication." International Journal of Biological Macromolecules 177 (April 2021): 401–12. http://dx.doi.org/10.1016/j.ijbiomac.2021.02.047.

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Keintjem, Brigieta, Defny S. Wewengkang, and Fatimawali Fatimawali. "AKTIVITAS PENGHAMBATAN PERTUMBUHAN MIKROORGANISME DARI EKSTRAK DAN FRAKSI ALGA Ulva lactuca TERHADAP Escherichia coli, Staphylococcus aureus, DAN Candida albicans." PHARMACON 8, no. 2 (2019): 397. http://dx.doi.org/10.35799/pha.8.2019.29306.

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ABSTRACT Algae have long been used for the treatment of various types of diseases. Ulva lactuca is one of the algae, which contains bioactive substances as antimicrobial, antifungal, and antioxidant. This study aims to determine the microorganisms growth inhibitory activity from Ulva lactuca algae obtained from the of Lembeh Strait waters in City of Bitung against microorganisms Escherichia coli, Staphylococcus aureus and Candida albicans. Ulva lactuca algae was extracted using maceration method with ethanol solvent and fractionated with methanol, n-hexan and chloroform solvents. Testing of an

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Zhang, Hailong, Quan Qin, Deyong Sun, Xiaomin Ye, Shengqiang Wang, and Zhixin Zong. "Automatic Detection of Floating Ulva prolifera Bloom from Optical Satellite Imagery." Journal of Marine Science and Engineering 12, no. 4 (2024): 680. http://dx.doi.org/10.3390/jmse12040680.

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Annual outbreaks of floating Ulva prolifera blooms in the Yellow Sea have caused serious local environmental and economic problems. Rapid and effective monitoring of Ulva blooms from satellite observations with wide spatial-temporal coverage can greatly enhance disaster response efforts. Various satellite sensors and remote sensing methods have been employed for Ulva detection, yet automatic and rapid Ulva detection remains challenging mainly due to complex observation scenarios present in different satellite images, and even within a single satellite image. Here, a reliable and fully automati

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Gastaldi, Marianela, Fausto Nahuel Firstater, Pedro Daleo, and Maite Andrea Narvarte. "Abundance of the sponge Hymeniacidon cf. perlevis in a stressful environment of Patagonia: relationships with Ulva lactuca and physical variables." Journal of the Marine Biological Association of the United Kingdom 96, no. 2 (2015): 465–72. http://dx.doi.org/10.1017/s0025315415001198.

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Understanding the variables (biotic or abiotic) controlling coastal communities is the main goal of ecology research and it is crucial to predict how communities will evolve under the increasing pressure on coastal systems by human activities. The general aims of this study were to assess the variables affecting the distribution of the fast-growing sponge Hymeniacidon cf. perlevis, and to evaluate if physical stressful conditions have an influence in the relationship between Hymeniacidon and the sea lettuce Ulva lactuca. Specifically, the aims were to evaluate the abundance patterns of Hymenia

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