Short Communication: Biological control agent for Spodoptera litura on vegetable plants

Color is important factor ornamental fish, especially sword platy fish, because can affect selling value. One factor influences color brightness is carotenoids. Carotenoids cannot synthesized by fish's body so must be supplied through feed provided. Red spinach is a natural ingredient that contains carotenoids. Aim of research was to determine effect of adding red spinach leaf extract to artificial feed to increase color brightness, growth and survival of Xiphophorus helleri. Research method used a completely randomized design with 4 treatments and 4 repetitions. Concentrations of red spinach leaf extract are 0%, 3%, 6% and 9%. Parameters observed were color brightness, absolute weight, absolute length, survival rate and water quality. Results showed that addition of red spinach leaf extract had a significant effect (P<0.05) on brightness of fish color but had no significant effect (P>0.05) on growth, weight, length and survival rate. Highest increase in color brightness and absolute weight growth was obtained in 9% treatment with an average color brightness score of 6.66, an absolute weight of 0.36 g. Highest absolute length growth occurred treatments C (6%) and D (9%) at 0.41 cm and highest survival rate was obtained treatments A, B and C with a survival percentage of 88%.

Section: Discussionmentioning

confidence: 98%

Effect of addition of red spinach leaf extract (Amaranthus tricolor L.) in feed against the level of color brightness of sword platy fish (Xiphophorus helleri)

Perdana,

Maulida,

Indriani

2024

“…Seaweed is quite abundant, thus during the past ten years, as demand for it has grown, seaweed agriculture has flourished. Consequently, a substantial quantity of seaweed waste is generated from diverse industrial procedures, including the food industry, which imposes strict quality standards on the seaweed [15]. Within a circular economy, these waste materials can be utilized as a third-generation biomass for various purposes such as pharmaceuticals, animal feed, agriculture, and biofuels.…”

Section: Seaweedsmentioning

confidence: 99%

Food packaging based on biodegradable polymers from seaweeds: a systematic review

Akbar,

Mustari

2024

As a result of its brief lifespan, food packaging contributes significantly to environmental contamination through the rapid accumulation of plastic in the environment. In order to mitigate these impacts and provide a food packaging solution that is more environmentally sustainable, researchers have created biodegradable and biobased polymers, which are presently being introduced to the market. The current state of research regarding the incorporation of seaweed into food packaging and active packaging is summarized in this study. In order to emphasize the benefits of polysaccharides and draw attention to the constraints of current research, this study also presents a synopsis of the effects of seaweed incorporation on a range of properties, including chemical, physical, thermal, antioxidant, antimicrobial, and mechanical attributes, in addition to the release of active compounds. A multitude of polysaccharides, including those found in seaweed, have the potential to enhance the antibacterial, thermal, and mechanical properties of these polymers, among other attributes. In addition to increasing hydrophilicity and mechanical properties such as tensile strength and elongation at break, they suggest employing it as active packaging. This is feasible as a result of the antioxidant properties of seaweed, which inhibit lipid oxidation and decrease toxic, mutagenic, or carcinogenic free radicals, thereby extending the nutritional value and shelf life of food. Certain varieties of seaweed have exhibited the capacity to impede the proliferation of bacteria classified as gram-positive and gram-negative. Thus, their prospective application as antimicrobial packaging is indicated.

“…The prospect of seaweed is supported by many bioactive compounds such as alkaloids, carotenoids, flavonoids, terpenes, tocopherols, peptides, polysaccharides and polyphenols [2]. Several studies reported that seaweed bioactive compound components can be antioxidants, antibacterial, anti-inflammatory, antidiabetic, antidiarrheal, antimicrobial, and antibacterial [3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Activity of Extract Green Seaweed Ulva intestinalis in North Waters of Aceh

irwan,

Herwina,

Ramadani

et al. 2024

The appearance of bacterial resistance and pathogenic infections makes efforts to find new drugs as natural bacterial agents continue. One of them is through the utilization of marine organisms such as seaweed. Some studies show the content of seaweed bioactive compounds has potential in the pharmacological field. This study aims to determine the type of secondary metabolite compounds and antibacterial activity of ethanol extract of Ulva intestinalis. Seaweed extraction using the maceration method for 3 x 24 hours and antibacterial activities were tested by disc diffusion method. The results showed that there were 5 types of secondary metabolite compounds in the extract, namely alkaloids, flavonoids, glycosides, saponins, and steroids. The antibacterial activity test of seaweed extract against Propionibacterium acnes and Aeromonas hydrophila bacteria in the concentration range of 50% to 100% showed a moderate inhibition zone diameter