Papers by RACQUEL BARCELO
Electronic Journal of Biology, 2015
This study identified the secondary metabolites present and determined the antioxidant activity o... more This study identified the secondary metabolites present and determined the antioxidant activity of 31 edible wild fruits grown in Benguet province, Cordillera Administrative Region, Philippines. Total polyphenol and flavonoid content were estimated using Folin-Ciocalteu and aluminium chloride method respectively. Antioxidant activity was measured through diphenyl-1-picrylhydrazyl assay. Based on the results, the following bioactive constituents are present in the fruits: alkaloids, steroid glycosides, saponins, flavonoids, polyphenols and tannins. The fruits contain more polyphenols than flavonoids. All the fruits except Physalis peruviana (Solanaceae) exhibited higher antioxidant activity than Vitamin E (Myra E), ascorbic acid (50 ug/mL), and trolox (1000 uM). Dillenia philippinensis (Dilleniaceae) exhibited the highest antioxidant activity. The antioxidant activity of the fruits and controls is significantly different (ρ ≤ 0.05). Post-hoc Tukey analysis of data reveals that several fruits have equal activity. Finally, there is a positive moderate correlation (r=0.50) between the total polyphenol content and antioxidant activity of the fruits.
Asia in transition, 2022
In the original version of the book, the author provided a revised map that has been updated in F... more In the original version of the book, the author provided a revised map that has been updated in Figure 6.1. The book and the chapter have been updated with the change.
Asia in transition, 2022
Herbal plants are among the products sold in many urban markets in Asia. They play a vital role i... more Herbal plants are among the products sold in many urban markets in Asia. They play a vital role in alleviating various and common ailments among citydwellers. People buy them because of their availability, ease of preparation, low cost, and effectiveness as compared to synthetic and commercial drugs. This study was conducted to identify and document the uses of the medicinal plants sold in the streets and market places of Baguio City, Philippines. Information on the part/s used, method of preparation, and mode of use/application were collected through semistructured questionnaires and interviews. The data gathered from 42 local street and stall vendors were analysed using use value (UV) as a quantitative tool. A total of 59 species belonging to 52 genera and 29 families were recorded to treat various health-related problems or ailments and diseases. More than 50 health problems were identified. Cough is the most common ailment treated. The leaves are the most frequently used plant part for the treatment of various diseases. Decoction and drinking are the most common modes of preparation and administration respectively. Overall , Lamiaceae is the most dominant (11 species) and important family (UV 2.26), while Angelica keiskei (Miq) Koidz is the most important species (UV 1.05). Thus, this study shows that medicinal plants continue to be widely sold by local vendors for primary health care in an urban context.
29th Philippine Association for Laboratory Animal Science (PALAS) Annual Scientific Conference an... more 29th Philippine Association for Laboratory Animal Science (PALAS) Annual Scientific Conference and Workshop, Crowne Plaza Hotel, Ortigas (2017, May 18-19).
The fruits Vaccinium myrtoides (‘ayosep’), Annona muricata (‘guyabano’), Garcinia mangostana (man... more The fruits Vaccinium myrtoides (‘ayosep’), Annona muricata (‘guyabano’), Garcinia mangostana (mangosteen), Ananas comosus (pineapple), and Fragaria × ananassa (strawberry) are consumed either raw or as wine products. Given the paucity of data on the phenolic content of these fruits and their wine products, this study has quantified and compared their total polyphenol and flavonoid content using Folin-Ciocalteu and aluminium chloride method. The fruits and their wine derivatives were also evaluated for antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl assay compared to Vitamin E (positive control). Results show that ‘ayosep’ contains the highest polyphenol (59.12 ± 0.0006 mg gallic acid equivalent per 100g fresh weight) and flavonoid (1186.44 ± 0.21mg quercetin equivalent per 100g fresh weight). Among all the fruits and wines, strawberry fruit and pineapple wine have the highest and lowest 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity with 92.35% (± 0.69) and 9.94%...
Electronic Journal of Biology, 2015
This study identified the secondary metabolites present and determined the antioxidant activity o... more This study identified the secondary metabolites present and determined the antioxidant activity of 31 edible wild fruits grown in Benguet province, Cordillera Administrative Region, Philippines. Total polyphenol and flavonoid content were estimated using Folin-Ciocalteu and aluminium chloride method respectively. Antioxidant activity was measured through diphenyl-1-picrylhydrazyl assay. Based on the results, the following bioactive constituents are present in the fruits: alkaloids, steroid glycosides, saponins, flavonoids, polyphenols and tannins. The fruits contain more polyphenols than flavonoids. All the fruits except Physalis peruviana (Solanaceae) exhibited higher antioxidant activity than Vitamin E (Myra E), ascorbic acid (50 ug/mL), and trolox (1000 uM). Dillenia philippinensis (Dilleniaceae) exhibited the highest antioxidant activity. The antioxidant activity of the fruits and controls is significantly different (ρ ≤ 0.05). Post-hoc Tukey analysis of data reveals that severa...
Philippine Council for Health Research & Development (PCHRD) – DOST Annual Convention and General... more Philippine Council for Health Research & Development (PCHRD) – DOST Annual Convention and General Assembly, New World Makati Hotel, Makati City. (2016, March 17).
Ethnobotany of Mountain Regions, 2021
Ethnobotany of Mountain Regions, 2021
Ethnobotany of Mountain Regions, 2021
Ethnobotany of Mountain Regions, 2021
Ethnobotany of Mountain Regions, 2021
Ethnobotany of Mountain Regions, 2021
Botany and Ecology Description: The genus Alpinia is the largest and most widespread in the famil... more Botany and Ecology Description: The genus Alpinia is the largest and most widespread in the family Zingiberaceae (Kress et al. 2005). According to Kress et al. (2005), the common traits of evergreen herbs belonging to this genus are absence of abscission layer between the rhizome and leafy shoots, small lateral staminodes of flowers, reduced or absence of swellings at the sides of the base of the labellum, absence of extrafloral nectaries, and indehiscent or fleshy spherical fruits. A. vanoverberghii is a 1-8 m terrestrial herb without true stem. The pseudostem is 2-5 cm long. It has erect and drooping leafy shoot, yellowish brown, scaly and thick rhizomes (7-40 mm wide). Leaves are lance-shaped to oblong. The ligule is oblong, 10-15 mm long, glabrous, subcoriaceous, mid-green and apex rounded. The 35-40 cm long pendulous inflorescence has cylindrical flower bud, white flowers are arranged in rachis. Corolla lobes are linear-oblong. Labellum lobes are subulate or deltate. Flower bracts are not present. Ovary is ovoid to subovoid. Fruits are indehiscent, mid-green globose to
Ethnobotany of Mountain Regions, 2021
Ethnobotany of Mountain Regions, 2021
Botany and Ecology Description: A deciduous or evergreen climbing shrubby and woody vine (liana) ... more Botany and Ecology Description: A deciduous or evergreen climbing shrubby and woody vine (liana) up to 10 m high with small simple, entire, oval, elliptic or oblong, pointed, and alternate or spiral leaves. It has a cuspidate or acuminate leaf apex and cuneate or obtuse leaf base. The underneath surface of leaves is dotted silvery white with small brown scales and light green on the surface. Silvery brownish or golden-colored lepidote or peltate scales or stellate hairs may be found on the surface of vegetative parts. One yellow fragrant trumpet-shaped flower or simple cyme in the inflorescence (6-9 mm
Ethnobotany of Mountain Regions, 2021
Local Names Bayating/Amoting (Igorot); Klutuk (Indonesia) Botany and Ecology Description: A peren... more Local Names Bayating/Amoting (Igorot); Klutuk (Indonesia) Botany and Ecology Description: A perennial growing up to 4 m high, 30 cm in diameter, green or yellow-green herb with pseudostem containing milky juice (Sulistyaningsih 2016). Broad and large dark green leaf blades are arranged in spiral with thick midrib and parallel veins arising from it. Leaf petiolar canal is straight with erect margins or with margins curved inward but not enclosed or overlapping. The leaf base is either equilateral or nonequilateral (Sotto and Rabara 2000). Sap color is milky to red-purple. There are several suckers (one to seven) that are close to parent. Petiole ranging from 20 to 48 cm is green with brown to black color. The leaf blade surface (3 m long and 60 cm wide) is dark green and shiny while the lower surface is light green and dull. Leaf base and apex are rounded and truncate, respectively. The upper male flower is biseriate, five stamens, compound tepal 4-5 cm long, brown purplish, free tepal lanceolate, and white filaments. Male bud is lanceolate, dark violet with
Ethnobotany of Mountain Regions, 2021
Ethnobotany of Mountain Regions, 2021
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Papers by RACQUEL BARCELO