Dynamics of β-carotene and fucoxanthin of tropical marine Navicula sp. as a response to light stress conditions

Telussa, Ivonne; Rusnadi,; Nurachman, Zeily

doi:10.1016/j.algal.2019.101530

Cited by 18 publications

(21 citation statements)

References 21 publications

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“…While the psychological disorder is an anxiety which arises as a side effect of HD, ranging from mild anxiety to heavy-scale anxiety even patients can experience panic. Physical changes due to side effects from HD tend to make the patient feel anxious, thereby affecting interpersonal relationships with other people and the life partner (Telussa, Rusnadi, & Zeily Nurachman, 2019). Such psychological problems can affect the quality of life of GGK patients will be or are undergoing HD.…”

Section: A Introductionmentioning

confidence: 99%

Effect of Progressive Muscle Relaxation on The Level of Anxiety of Haemodialysis Patients at Muhammad Sani Hospital in Karimun

Muchtar¹,

Marlian²

2019

IJECA

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Chronic kidney disease (CKD) has increased these years. Datas from Muhammad Sani Hospital showed number of patients underwent hemodialysis (HD) were 34 in 2015, and has become 77 in April of 2019. One of the replacement therapy in CKD patient was hemodialysis. HD intended to take over renal function to prolong in improve patient’s quality of life. Patients who undergo HD will experience anxiety caused by some stressors, such as pain at the location of needle insertion. One of the approach to overcome patients from the pain in HD is a non-farmacologic one, which is progressive muscle relaxation (PMR). This study intended to find the effect of PMR to the anxiety level of HD patients. It was a quantitative study, with a quasi experiment using pre and post test without control. Sampling method was purposive sampling and the size was 20 respondents. We used Hamilton Anxiety Rating Scale (HARS) to detrrmine the level of anxiety, and the intervention was PMR. Paired T-Test was applied, with a normality test (Shapiro Wilk) previously done. We found that the effect of PMR was significant, with a p-value 0,000 (<0,005) and the mean of the anxiety level before and after intervention were respectively 22,65 and 16,30 From all 14 parameters in the questionnaire, from the highest score found in this study were respectively: Sleep Disorder, Depression, Stress, Sensoric related Symptom and Gastrointestinal related Symptoms. Based on this study,there was significant effect of PMR in decreasing the anxiety level, and so it is recommended to use PMR in overcoming anxiety problem in HD patients

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Section: A Introductionmentioning

confidence: 99%

Effect of Progressive Muscle Relaxation on The Level of Anxiety of Haemodialysis Patients at Muhammad Sani Hospital in Karimun

Muchtar¹,

Marlian²

2019

IJECA

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“…Thus, b-carotene can be used as a proxy for the amount of photosystems (Buck et al, 2022). The cellular contents of b-carotene in diatoms are reported to be relatively constant or increase after light exposure (e.g., Kuczynska et al, 2015;Telussa et al, 2019). In the present study, although the carotene pool size (i.e., [carotenes]/[chl a]) decreased in LL and HL, the underlying mechanisms are unclear and need to be investigated further.…”

Section: Quick Responses For Light Exposure and High Photophysiologic...mentioning

confidence: 99%

Photophysiological response of diatoms in surface sediments to light exposure: A laboratory experiment on a diatom community in sediments from the Chukchi Sea

et al. 2022

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Diatoms form dense blooms in the Pacific Arctic region from spring to summer, supporting the unique benthic-pelagic coupling ecosystems. Although the Arctic has a severe light-limited season from autumn to winter, diatoms can proliferate in spring when sufficient light becomes available for photosynthesis. One of the crucial strategies for diatoms to survive in unfavorable growing conditions is to form resting stages. Because of enhanced primary and export production in the Pacific Arctic shelves, many viable diatom resting stages can be detected in the surface sediments. However, little is known about the photophysiological response of viable diatom cells, including resting stages, in sediments to light availability. We conducted a laboratory experiment investigating the photophysiological capabilities of the diatom cells containing resting stages using surface sediments from the Chukchi Sea shelf. As a result, diatoms grew dramatically after light exposure, and Chaetoceros socialis complex highly contributed to the enhanced diatom abundance. Their photophysiological changes were also evident from the maximum quantum efficiency (Fv/Fm) of photochemistry in photosystem II, 13C-based photosynthetic-energy (PE) parameters, diadinoxanthin (DD)-diatoxanthin (DT) pool size, and the de-epoxidation state (DES) of DD. Even after the excess light exposure suppressed the photosynthetic activity in the microalgal cells, the diatoms recovered quickly, indicating the high photophysiological plasticity to dynamic light changes. Therefore, our results suggest that diatoms in surface sediments have a high seeding potential for blooms in the Pacific Arctic shelf region.

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“…The condensation of two GGPP molecules produces phytoene, known as the first precursor of carotenoids. At this point, two enzymes participate in photosynthetic organisms: one is a CrtP (the Crtp concept is not clear) type that produces ζ‐carotene and the other is a ζ‐carotene desaturase enzyme, which produces lycopene 16,27,28 …”

Section: Classification Chemical Structure Biosynthesis and Digestibi...mentioning

confidence: 99%

“…At this point, two enzymes participate in photosynthetic organisms: one is a CrtP (the Crtp concept is not clear) type that produces ζ-carotene and the other is a ζ-carotene desaturase enzyme, which produces lycopene. 16,27,28 Fucoxanthin is hydrolyzed to fucoxanthinol in the gastrointestinal tract by digestive enzymes such as lipase and cholesterol esterase around 2 h after ingestion. It later undergoes dehydrogenation or isomerization in the liver, which causes fucoxanthinol to be metabolized to amarouciaxanthin A.…”

Section: Classification Chemical Structure Biosynthesis and Digestibi...mentioning

confidence: 99%

Circular bioeconomy in the production of fucoxanthin from aquatic biomass: extraction and bioactivities

Sarmiento-Padilla

Moreira

Rocha

et al. 2021

J of Chemical Tech & Biotech

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Fucoxanthin is a high‐added‐value carotenoid compound. It has been extracted from marine sources by various extraction methods in different countries. Fucoxanthin finds application in areas such as the pharmaceutical, cosmetic and food industries. However, recent research has shown that fucoxanthin has anticancer, antioxidant, anti‐obesity, antidiabetic, hypoglycemic and neuroprotective activities, which suggest its use as a food supplement. Finally, this review aims to show the latest advances of fucoxanthin from seaweeds in the extraction process, chemical characterization and bioactivities in the development of third‐generation biorefineries and circular bioeconomy. © 2021 Society of Chemical Industry (SCI).

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Dynamics of β-carotene and fucoxanthin of tropical marine Navicula sp. as a response to light stress conditions

Cited by 18 publications

References 21 publications

Effect of Progressive Muscle Relaxation on The Level of Anxiety of Haemodialysis Patients at Muhammad Sani Hospital in Karimun

Effect of Progressive Muscle Relaxation on The Level of Anxiety of Haemodialysis Patients at Muhammad Sani Hospital in Karimun

Photophysiological response of diatoms in surface sediments to light exposure: A laboratory experiment on a diatom community in sediments from the Chukchi Sea

Circular bioeconomy in the production of fucoxanthin from aquatic biomass: extraction and bioactivities

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