Study on the Improvement of Essential Oil Quality and Its Repellent Activity of Betel Leaves Oil (Piper betle l.) from Indonesia

The study to improve the quality of Indonesia betel leaves oil is done by treatment of citric acid and sodium carbonate. The treatment showed that the iron content and acid value were reduced optimally in the addition of 5% (w/w) citric acid (12 hours, 50oC) and 5% (w/w) sodium carbonate (9 hours, 50oC) yielded 0.45 mg/L of iron content and 1.00 mg/g of acid value, respectively. The main component of Indonesia betel leaves oil are 4-allyl phenylacetate. The descriptive sensory analysis showed that there were differences between betel leaves oil from Bogor compared with Boyolali and Makassar. There is a significant difference that the content of betel leaves oil from Bogor contains an isoeugenol compound of 20.71% while, Boyolali and Makassar contain eugenol of 17.02 and 19.21%, respectively. The study of the insect repellency indicated that Indonesia betel leaves oil potentially used as mosquito of Aedes aegypti repellent.

Download Full-text

Influence of preemergently applied herbicides on the yield and quality of caraway achenes (Carum carvi L.)

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun200856020255 ◽

2008 ◽

Vol 56 (2) ◽

pp. 255-266

Author(s):

Antonín Vaculík

Keyword(s):

Essential Oil ◽

Standard Length ◽

Oil Content ◽

Competitive Ability ◽

Weed Species ◽

Yield And Quality ◽

Significant Difference ◽

Positive Effect ◽

Different Doses

Caraway has very low competitive ability against most of weed species. Therefore, it is important to choose a suitable herbicide control, especially at biennial caraway. The experiments with the herbicides applied in caraway were found in pure growth, with variety Kepron (with standard length of vegetative period). The aim of the trials was to find out the differences at achenes yiled and essential oil content after the treatment by the various herbicides, applied preemergently. Also, the selective activity of individual herbicides was tested, including the different doses. The herbicides used in the experiments had enough level of selektivity on the plants of caraway. They had a positive effect on the yiled comparing to non-treated control variant in all observed years. There was no statistically significant difference in essential oil kontent between the treated variants and non-treated control. On the basis of these results, the most suitable herbicide was chosen for the „minor“ registration for caraway.

Download Full-text

A Review on the Quality of Palm Oil (Elaeis guineensis) Produced Locally in Imo State, Nigeria

Sustainable Food Production ◽

10.18052/www.scipress.com/sfp.4.40 ◽

2018 ◽

Vol 4 ◽

pp. 40-50 ◽

Cited By ~ 2

Author(s):

Enyoh Christian Ebere ◽

Verla Andrew Wirnkor ◽

Enyoh Emmanuel Chinedu ◽

Verla Evelyn Ngozi

Keyword(s):

Palm Oil ◽

Elaeis Guineensis ◽

Meta Analysis ◽

Oil Quality ◽

Acid Value ◽

Poor Quality ◽

Smoke Point ◽

Imo State ◽

Open Access Journals

Over 70 % inhabitants of Imo state pend on palm oil for their cooking, frying etc. The study reviews available data on palm oil quality produced locally in Imo state with a view of providing up-to-date information and identify research gaps that could have health consequences on consumers. Peer reviewed scientific articles were reviewed and a meta-analysis of four different scientific research databases, PubMed, Web of Science, Google Scholar and Directory for Open-Access Journals was conducted. The result showed that palm oil produced locally in Imo state has average of pH (4.73), acid value (28.3 mg/KOH), FFA (14.15 mg/KOH), smoke point (115°C), iodine value (1.68 wijj’s), saponification value (197.07 mgKOH/g), ester value (168.77), moisture content (0.44 %), density (0.89 g/ml), SG (0.91), peroxide value (17.75 mEq./kg), refractive index (1.46oBx) and viscocity (60.04 cps). Overall palm oil is highly degraded and of poor quality since major quality indicators are not within Nigerian Industrial Standard and Standard Organization of Nigeria. Also, there is a dearth of information/data available on quality of palm oil produced locally in Imo state especially on its microbial status. Food scientist should look in that direction to enhance proper understanding of the quality of palm oil.

Download Full-text

THE ESSENTIAL OIL QUALITY OF CHAMOMILE, MATRICARIA RECUTITA L., AFTER ITS LARGE-SCALE DISTILLATION

Acta Horticulturae ◽

10.17660/actahortic.2007.749.34 ◽

2007 ◽

pp. 269-273 ◽

Cited By ~ 5

Author(s):

D. Bucko ◽

I. Salamon

Keyword(s):

Essential Oil ◽

Large Scale ◽

Oil Quality ◽

Matricaria Recutita

Download Full-text

ANISE (PIMPINELLA ANISUM): CHANGES IN YIELDS AND COMPONENT COMPOSITION ON HARVESTING AT DIFFERENT STAGES OF PLANT MATURITY

Experimental Agriculture ◽

10.1017/s0014479708006959 ◽

2009 ◽

Vol 45 (1) ◽

pp. 117-126 ◽

Cited By ~ 13

Author(s):

ABDULHABIP ÖZEL

Keyword(s):

Essential Oil ◽

Block Design ◽

Component Composition ◽

Growth Stages ◽

Growing Seasons ◽

Maturation Stages ◽

Plant Maturity ◽

Harvesting Stage ◽

Main Component

SUMMARYThis study investigated the effects of harvesting at different plant maturation stages on the yield and component compositions of aniseed. It was carried out on the Harran Plain (Sanliurfa, Turkey) in the 2002 and 2003 growing seasons. A randomized complete block design was used. The plants were harvested at 10 different growth stages and determinations were made of the yields of seed, the essential oil and its main component (E)-anethole, the weight of 1000 seeds, the number of umbels per plant, the number of seedless umbels per plant and number of seeds per umbel. Statistical analyses indicated that all properties studied were affected by the harvesting stage. The fourth harvesting stage gave the highest yields of seed, essential oil and (E)-anethole. The first and second harvesting stages provided the best quality of essential oils with a high (E)-anethole content.

Download Full-text

Effect of pH on growth, mineral content and essential oil quality of buchu (Agathosma betulina) grown under controlled conditions

South African Journal of Plant and Soil ◽

10.1080/02571862.2013.811299 ◽

2013 ◽

Vol 30 (2) ◽

pp. 107-112 ◽

Cited By ~ 1

Author(s):

Babalwa Ntwana ◽

G André Agenbag ◽

Petrus Langenhoven

Keyword(s):

Essential Oil ◽

Mineral Content ◽

Oil Quality ◽

Effect Of Ph ◽

Controlled Conditions

Download Full-text

Characterization of patchouli oil (Pogostemon cablin Benth) production of Tinombala Village, Ongka Malino District, Parigi Moutong Regency

Journal of Physics Conference Series ◽

10.1088/1742-6596/2126/1/012024 ◽

2021 ◽

Vol 2126 (1) ◽

pp. 012024

Author(s):

P H Abram ◽

W Putri ◽

S Nuryanti ◽

S M Sabang

Keyword(s):

Refractive Index ◽

Specific Gravity ◽

Iron Content ◽

Chemical Properties ◽

Acid Number ◽

National Standard ◽

Patchouli Alcohol ◽

Three Samples ◽

Main Component

Abstract Patchouli oil comes from Tinombala village which has never been tested for the Indonesian National Standard (SNI). The purpose of this study was to determine the quality of patchouli oil by characterizing parameters of physical and chemical properties including color, refractive index, specific gravity, solubility in alcohol, acid number, ester number, iron content (Fe), and patchouli alcohol and alpha copaene content.. Sampling was done by random sampling. The results show a specific gravity of 25/25oC sample A = 0.9564, B = 0.9658, and C = 0.9590, refractive index (nD20) sample A = 1.5111, B = 1.5085 and C = 1.5086, the solubility in alcohol using ethanol of the three samples is >1:10 while using methanol 1:10, the acid number of the sample A=21.0375, B=9.1162 and C=19.6350, the ester number of the sample A=28,05, B=21.04 and C=21.04, iron (Fe) content of sample A=1.84210 mg/L, B=0.186842 mg/L and C=6.78950 mg/L, patchouli content alcohol sample A=,16,96%, B=15,52% and C=14,55% and for alpha copaene not detected. The results showed that the quality of patchouli oil in Tinombala village did not meet the Indonesian National Standard (SNI). Only the specific gravity, refractive index, and iron content are by the quality requirements, while the acid number and ester number and the main component determining the quality of patchouli oil, namely the patchouli alcohol content are still below the Indonesian National Standard, which is below 30%.

Download Full-text

The Effect of Preservation Methods on the Nutritional Quality of Fluted Pumpkin (Tel/airia occidentalis) Leaves

Biological Sciences - PJSIR ◽

10.52763/pjsir.biol.sci.54.3.2011.167.171 ◽

2011 ◽

Vol 54 (3) ◽

pp. 167-171

Author(s):

Fred Omon Joseph Oboh ◽

Osayuwamen Aigbe

Keyword(s):

Citric Acid ◽

Vitamin C ◽

Boiling Water ◽

Drying Time ◽

Iron Protein ◽

Oven Drying ◽

Fluted Pumpkin ◽

Significant Difference ◽

Pre Treatment

The present research was undertaken to investigate the effect of various blanching and drying treatments on the vitamin C, �-carotene, iron, protein content and drying time of fluted pumpkin (Telfairia occidentalis Hook) leaves. The leaves were subjected to sun or oven drying alone or after blanching in boiling water, dilute citric acid (0.3%) or dilute potassium meta-bisulphite (0.5%). In the absence of blanching pre-treatment, oven drying resulted in shorter drying time for the leaves and a higher vitamin C content of the dried product than sun drying and there was no significant difference (p>0.01) between the protein, �-carotene and iron content of the oven and sun dried products. Leaves blanched in boiling water, dilute citric acid, or dilute potassium meta-bisulphite solution, followed by sun or oven drying had less vitamin C, iron, protein and �-carotene than leaves dried without blanching. Compared with the use of boiling water, blanching in boiling potassium meta-bisulphite reduced the loss of �-carotene, protein and iron; blanching in dilute citric acid reduced the loss of iron. Except for citric acid pre-treatment, blanching prior to drying shortened drying time.

Download Full-text