Porphyra is a genus of coldwater seaweeds that grow in cold, shallow seawater. More specifically, it belongs to red algae phylum of laver species (from which comes laverbread), comprising approximately 70 species. [2] .

Porphyra is a red alga belonging to the family Bangiaceae, order Bangiales, class Protoflorideae, and phylum Rhodophyta (Ragan et al., 1994). Porphyra is one of the main seaweeds ingested by humans, and its planting proportion in the world is gradually increasing.

Porphyra is generally found in cool, marine waters. It is an important component of shallow marine waters into the intertidal zone. As an autotroph it is an important base to marine food chains. It is also a type of ‘ seaweed ’ that is commonly eaten by humans and is called ‘ nori ’ or ‘laver’.

Porphyra spp. appears on rocky shorelines throughout the world, including a few species in the tropics or at the poles. The greatest diversity is found in cold-temperate and boreal regions. Most species appear as winter or summer annuals. Porphyra can bear desiccation, so can live in the highest, driest reaches of the intertidal zone.

Oct 13, 2021 · Porphyrais generally found in cool, marine waters. It is an important component of shallow marine waters into the intertidal zone. As an autotroph it is an important base to marine food chains. It is also a type of 'seaweed' that is commonly eaten by humans and is …

Mar 23, 2017 · The reproductive pattern of Porphyra sp. was observed in laboratory culture. The thalli obtained from both natural populations and from cultures were monostromatic and reniform, obovate to linear-oblanceolate.

Habitat: occurs on low intertidal rock in spring to early summer. In western Aleutians, this species is found in the high to mid intertidal, where it is more brownish in color.

6 days ago · The amino acid composition of untreated Porphyra sp. and protein samples is presented in Table 4. The overall amino acid content of the protein extracted using HPP at pH 7.8 was significantly lower than that of the untreated Porphyra sp. sample (p ≤ 0.05), primarily due to the nitrogen recovery being limited to a maximum of 32 %. Nevertheless ...

Mar 20, 2025 · Porphyra sp., commonly known as nori, stands out globally due to its nutritional richness and versatile applications. Nori is highly valued for its high protein content, essential amino acids, dietary fiber, and essential minerals like iron and iodine (Mahadevan, 2015; Miyasaki et …

Porphyra thalli produced viable spores in all sea-sons of the year. This was verified both in laboratory cultures and in collections of basiphytes with devel-oping (20–40 m long) and mature (3–50 mm) thalli. In laboratory culture, spore production was initiated when the thalli reached 0.5–6 mm. After culturing Porphyra sp. under ...