Penyahbauan Fukoidan dan Kesannya terhadap Ciri Fizikokimia dan Aktiviti Antipengoksidaan

Tan, Chia Sin; Khalafu, Sharifah Habibah Syed; Mustapha, Wan Aida Wan; Maskat, Mohamad Yusof

doi:10.17576/jsm-2018-4707-18

Cited by 7 publications

(1 citation statement)

References 23 publications

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“…Superoxide anion (SOA) scavenging activity was determined by measuring inhibition of pyrogallol autoxidation (Tan, Syed Khalafu, Wan Mustapha, Maskat, & Lim, 2018). Sample (0.3 ml) was added with 2.6 ml of phosphate buffer (50 mM, pH 8.24) and 90 µl from 3 mM of pyrogallol solution (dissolving in 10 mM of HCl).…”

Section: Superoxide Anion (Soa) Scavenging Activitymentioning

confidence: 99%

Sequential extraction of red button ginger ( Costus woodsonii ): Phytochemical screening and antioxidative activities

Jin

Chang

Khalid

et al. 2020

J. Food Process. Preserv.

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Costus plant is considered as a medicinal plant especially in therapeutic intervention. The current study reports the composition, phytochemical, and antioxidant properties of red button ginger (Costus woodsonii) using sequential extraction. Solvents of different polarities (hexane, ethyl acetate, methanol, and water) were used to sequentially extract the C. woodsonii bract, at increasing polarities. Phytochemical screening showed positive presence of flavonoids (all types of extracts), terpenoids (only in methanolic extract), and tannins (except aqueous extract). Overall, methanolic extracts showed the significantly (p ≤ .05) highest ascorbic acid content (75.76 ± 1.47 mg/100 ml), total phenolic content (249.64 ± 2.83 mg GAE/100 g), DPPH free radical-scavenging activity (78.76 ± 0.97%), ferric reducing antioxidant power (22.55 ± 0.96 mg TEAC/g), superoxide anion scavenging activity (46.60 ± 1.57%) and hydroxyl radical-scavenging activity (50.35 ± 0.96%). In short, sequential extraction provides understanding of polarity specificity of C. woodsonii plant and result indicated high polarity solvent (methanol and water) recovered higher bioactive compounds. Practical applications Sequential extraction procedures have shown a rapid increase in applications, in a wide range of sample types. This study proposed the use of sequential extraction with solvents of different polarities to elute maximum amount of compounds present in Costus woodsonii plant. Many studies indicated that Costus genus plant exhibited high bioactivities such as anticancer, apoptotic effect, anti-inflammatory, antidiabetics, antifungal, and antibacterial properties which revealed the potential values of these plants for nutraceutical application. However, the study on C. woodsonii is very limited. This report would reveal the assessment of sequential extraction performance and its relationship with the properties of C. woodsonii. This would generate considerable interest to the research community to improve the understanding of this plant. Overall, this report is very beneficial to impart a new information to the food industry as well as the pharmaceutical field, which may broaden the application of this plant as a potential functional crop and bioactive ingredient.

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Section: Superoxide Anion (Soa) Scavenging Activitymentioning

confidence: 99%

Sequential extraction of red button ginger ( Costus woodsonii ): Phytochemical screening and antioxidative activities

Jin

Chang

Khalid

et al. 2020

J. Food Process. Preserv.

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Recovery of value‐added glycopeptides from edible bird's nest (EBN) co‐products: enzymatic hydrolysis, physicochemical characteristics and bioactivity

2020

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BACKGROUND Processing of edible bird's nest (EBN) requires extensive washing to remove impurities and produces huge amounts of EBN co‐products, which contain mainly feathers with glycoproteins attached, which are usually discarded. This study was conducted to recover the valuable EBN glycoproteins from the waste material. Enzymatic hydrolysis was applied to recover EBN glycopeptides from EBN co‐products (EBNcoP) and processed cleaned EBN (EBNclean) was used as control, which were then freeze‐dried into EBN hydrolysates (EBNhcoP and EBNhclean, respectively). RESULTS The recovery yield for EBNhclean and EBNhcoP were 89.09 ± 0.01% and 47.64 ± 0.26%, respectively, indicating nearly 50% of glycopeptide can be recovered from the waste material. Meanwhile, N‐acetylneuraminic acid, a major acid sugar in EBN glycoproteins, of EBNhcoP increased by 229% from 58.6 ± 3.9 to 192.9 ± 3.1 g kg−1, indicating the enzymatic hydrolysis removed impurities and thus enhanced the N‐acetylneuraminic acid content. Total soluble protein was more than 330 g kg−1 for all the samples. Colour parameter showed that hydrolysate samples have greater L* (lightness) values. Chroma result indicates the intensity of all the samples were low (< 11). Fourier‐transform infrared (FTIR) spectrum displayed that the EBNhcoP exhibited similar functional groups with EBNhclean, indicating that the EBNcoP has similar functionality as EBNclean. Significantly higher (P ≤ 0.05) 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) activities were reported in EBNhcoP after the enzymatic reaction. CONCLUSION EBNhcoP were successfully recovered from low value EBNcoP with enhanced antioxidant activities. The findings of this work are beneficial for the EBN industry to reduce wastage and enhance economic values of EBN co‐products, both economically and nutritionally. © 2020 Society of Chemical Industry

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Recovery of glycopeptides by enzymatic hydrolysis of edible bird’s nest: the physicochemical characteristics and protein profile

Noor

Ramachandran

et al. 2020

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Penyahbauan Fukoidan dan Kesannya terhadap Ciri Fizikokimia dan Aktiviti Antipengoksidaan

Cited by 7 publications

References 23 publications

Sequential extraction of red button ginger ( Costus woodsonii ): Phytochemical screening and antioxidative activities

Sequential extraction of red button ginger ( Costus woodsonii ): Phytochemical screening and antioxidative activities

Recovery of value‐added glycopeptides from edible bird's nest (EBN) co‐products: enzymatic hydrolysis, physicochemical characteristics and bioactivity

Recovery of glycopeptides by enzymatic hydrolysis of edible bird’s nest: the physicochemical characteristics and protein profile

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