Comparison of Quality Characteristics and Antioxidant Activities between Porphyra yezoensis and Porphyra dentata in Korea

seungyeon, Baek; Jin, Kim Su; Kim, Da-Hee; Kim, Mee Ree

doi:10.3746/jkfn.2019.48.11.1233

Cited by 5 publications

(4 citation statements)

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“…Although the exact order of mineral content differed, they found that the major minerals were Ca, K, Mg, and Na, with Fe being the most abundant trace mineral. Baek et al (2019) reported that PY and PD differ in their mineral contents, and similar to the results of this study, the major minerals were Ca, K, Mg, and Na, with Fe being the most abundant trace mineral. In contrast with our findings, Fe content was 1.7 times higher in PD.…”

Section: Mineral Contentssupporting

confidence: 89%

Physicochemical characteristics and antioxidant activities of laver cultivars harvested at different times

Kim¹,

Kim²,

Jeong³

et al. 2021

Korean J. Food Preserv.

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The aim of this study was to compare the physicochemical characteristics and antioxidant activities of Pyropia dentata harvested in November (PD11), Pyropia seriata harvested in December (PS12), and Pyropia yezoensis harvested in December (PY12), January (PY01), or March (PY03). Total amino acid content (mg/100 g dry wt.) was high: PY01 (41,009.52) > PY12 (40,914.26) > PS12 (35,720.29) > PD11 (33,762.75) > PY03 (32,906.54). The major minerals within the three laver cultivars were Ca, K, Mg, and Na. PD11 exhibited the highest contents of shinorine (2,089.84 mg/ 100 g dry wt.) and porphyra-334 (3,127.96 mg/100 g dry wt.), which are mycosporine-like amino acids. Of the PY samples harvested at different times, PY03 exhibited the highest contents of shinorine (19.00 mg/100 g dry wt.) and porphyra-334 (438.31 mg/100 g dry wt.). The total phenol content was higher in PD11 (702.99 mg tannic acid equivalent/100 g) than those in the other samples. PD11 had the highest 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid radical-scavenging and ferric reducing antioxidant activities. The results provide basic information regarding the physicochemical characteristics and antioxidant activities of laver cultivars harvested at different times.

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Section: Mineral Contentssupporting

confidence: 89%

Physicochemical characteristics and antioxidant activities of laver cultivars harvested at different times

Kim¹,

Kim²,

Jeong³

et al. 2021

Korean J. Food Preserv.

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“…Similarly, in the comparative experiment at the Jimo aquafarm, strong light stress also showed the strongest correlation with the accumulation of sugars and MAAs but had the weakest correlation with the synthesis of soluble proteins and R-phycoerythrin (Table 3). The quality of the final laver product appears to be related to its protein content and glossiness, and several studies have reported that it is influenced by the cultivation duration and region [4,7,8,16,17]. Recently, laver physicochemical characteristics and antioxidant activities were also investigated, and the results showed that the antioxidant capacity of the algae increased with cultivation duration [12].…”

Section: Effects Of Nutrients and Solar Irradiance On The Cellular Co...mentioning

confidence: 99%

“…Oceanic conditions can have an important influence on the growth, development, and physiological status of laver. Furthermore, algal quality is greatly influenced by the harvest time and the cultivation area [4,[7][8][9][10]. However, previous studies have only conducted investigations into the effects of temperature, pH, salinity, and nutrient levels on the spatial and temporal variations in the proximate composition of algae.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Environmental Factors Affecting the Quality of Neopyropia yezoensis Cultivated in the Yellow Sea

Huang

Sun

Wang

et al. 2023

JMSE

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To investigate the potential influences of nutrients and solar irradiance of the sea area on the laver industry, Neopyropia yezoensis samples and the corresponding surface water were collected at different sites in Haizhou Bay and the Jimo aquafarm, and the solar irradiance was recorded on-site. Then the cellular compositions and the nutrients of seawater were determined. A comparative experiment was also designed to investigate the effect of strong light on the cellular composition of N. yezoensis. Gray correlation analysis showed that the seawater nutrient levels and solar irradiance had a similar correlation degree of 0.6 to 0.8, which indicated similar effects on algal cellular composition. Compared with those samples collected from Haizhou Bay, the algae cultivated at the Jimo aquafarm had higher contents of total protein and hydrolyzable polysaccharides. In addition, the content of chlorophyll a was relatively lower and that of β-carotene higher in the early-stage samples. The results of the comparative experiment showed that the decrease in light intensity on algae promoted the synthesis of chlorophyll a and R-phycoerythrin. It is speculated that the nutrient deficiency in the seawater and the resulting high transparency of the water make the algae more exposed to strong light conditions. This may be the reason for the poor glossiness and hardness of the laver products made from the cultivated algae in the north Yellow Sea. Thus, it puts forward specific requirements for the modification of N. yezoensis cultivation techniques in the north Yellow Sea.

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“…Porphyra dentata ( P. dentata ) is mainly distributed in the South China Sea and the Korean Peninsula. Studies have found that the extract is rich in polyunsaturated amino acids, carbohydrates, flavonoids, phycoerythrin, and other nutrients and has great potential for scientific research, the food industry, and other consumer industries (Aung & Eun, 2021; Baek et al., 2019; Choi et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

Conjoint transcriptomic and proteogenomic analysis of quality formation in various Porphyra dentata harvests: Photosynthesis acts as a stressor

Yang

et al. 2023

Food Frontiers

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Porphyra dentata is widely cultivated for its rich nutritional value and superior palatability. However, its quality varies with harvest time and there is a lack of understanding of the molecular mechanism of quality differences. Photosynthesis is a key factor in human‐mediated plant development and quality formation and changes. To explore the quality impact of photosynthesis on P. dentata, we compared transcriptomic and proteogenomic data of the first and fifth harvests. Of the 53,580 genes detected in this study, 7073 were identified as differentally expressed genes by RNA‐seq, and 462 showed differential expression between genes and proteins in proteogenomics. The results show that quality differences between harvest periods were regulated by proteins and genes from the allophycocyanin, Lhca1, chloroplast processing enzyme, and phycocyanin families. Generated cell tissue passivated continuously, the blades gradually became thicker and darker and had an increased degree of lignification, decreased protein levels, increased carbohydrate levels, and decreased quality. Our results demonstrate the complementary power of transcriptomics and proteogenomics and provide a rich database for quality improvement or evolutionary function analysis of P. dentata.

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Comparison of Quality Characteristics and Antioxidant Activities between Porphyra yezoensis and Porphyra dentata in Korea

Cited by 5 publications

References 0 publications

Physicochemical characteristics and antioxidant activities of laver cultivars harvested at different times

Physicochemical characteristics and antioxidant activities of laver cultivars harvested at different times

Analysis of Environmental Factors Affecting the Quality of Neopyropia yezoensis Cultivated in the Yellow Sea

Conjoint transcriptomic and proteogenomic analysis of quality formation in various Porphyra dentata harvests: Photosynthesis acts as a stressor

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