Refine Your Search

Content Type
2 Result(s) for ' plant parts'
  within Article Keywords
Sort by      Display  
1.
Functional Properties of Essential Oils Distilled from Areal Parts of Mandarin Varieties (Citrus reticulata Blanco.)
H.W.L.S. GUNARATHNA, R.M. DHARMADASA, I.J. AMADORU, D.C. ABEYSINGHE
World Journal of Agricultural Research. 2023 11 (3). doi: 10.12691/wjar-11-3-1
Keywords: Areal plant parts , Citrus reticulata, Essential oil, Functional properties, Mandarin
Context: Essential oil extracted from mandarin (Citrus reticulata Blanco.) (Rutaceae) is widely used in traditional medicine, pharmaceutical, food and cosmetic industries. However, the use of citrus leaf oil is not well established, and information is lacking. This study aimed to quantify the yield of essential oil content and evaluate the functional properties of essential oil extracted from immature and mature leaves of five different mandarin varieties (Indu, Heennaran, Madhu, Juicy and Rahangala) grown in Sri Lanka. The essential oil was distilled using Clevenger-type apparatus. Quantification of total phenolic content (TPC), total flavonoid content (TFC) and total antioxidant capacity (TAC) were carried out by using the modified Floin-Ciocalteu method, colourimetric method and ferric reducing antioxidant power (FRAP) assay, respectively. The results revealed that all tested leaf essential oil of mandarin varieties contained marked amounts of essential oil content and TPC, TFC, and TAC. Significantly highest TPC (69.80 ± 5.14 mg GAE/g DW), TFC (265.08 ± 7.95 mg RE/ g DW), TAC (87.70 ± 4.02 mg TE/ g DW) and essential oil content (1.89 ± 0.19 mL/ 100 g DW) were observed in the Indu mandarin variety. Moreover, there were positive correlations of TAC with TPC (R2 = 0.8822) and TFC (R2 = 0.4004). The greater availability of bioactive compounds in C. reticulata leaf essential oil highlighted that the essential oil of mandarin is a potential source of valuable components. This research highlights the promising potential of utilizing the leaf essential oil of C. reticulata as a rich source of these beneficial components in the pharmaceutical, food and cosmetic industries.
Abstract Full Text (PDF) [Epub] Full Text (HTML)
2.
Distribution of Bioactive Compounds and Antioxidant Capacity of Different Parts of Justicia adhatoda L. (Acanthaceae)
M.M. Nipunika, D.C. Abeysinghe, R.M. Dharmadasa
World Journal of Agricultural Research. 2022 10 (2). doi: 10.12691/wjar-10-2-4
Keywords: Acanthaceae, Justicia adhatoda, bioactive compounds, plant parts , total antioxidant capacity
Context: Justicia adhatoda L is a well-known medicinal plant used in traditional systems of medicine globally. Different parts of J. adhatoda have been used for treatment of various ailments, mainly for the respiratory tract-based ailments. The present study was conducted to quantify the total antioxidant capacity (TAC), total phenolic content (TPC) and total flavonoid content (TFC) of different parts (mature leaves, immature leaves, flowers, bracts, soft stems, bark of mature stem and roots) of J. adhatoda using ferric reducing antioxidant power (FRAP) assay, modified Folin-Ciocalteu method and colorimetric method respectively. The results revealed that all tested parts of J. adhatoda contained marked amounts of TAC, TPC and TFC. Among tested parts, immature leaves showed a significantly higher TAC (19.28 ± 1.96 mg/TE g DW) followed by flowers (16.97 ± 0.99 mg/TE g DW) and bracts (14.19 ± 1.85 mg/TE g DW). Significantly the highest TPC (11.33 ± 0.14 mg/GAE g DW) and TFC (16.66 ± 3.06 mg/RE g DW) were observed in flowers followed by bracts and immature leaves. Moreover, there were positive correlations of TAC with TPC (R2 = 0.5411) and TFC (R2 = 0.5209). According to the results, it can be concluded that immature leaves, flowers and bracts of J. adhatoda contain marked amounts of bioactive compounds and hence could be effectively used for pharmaceutical industries.
Abstract Full Text (PDF) [Epub] Full Text (HTML)