Open Access Original Research Article

Utilization of Acetyl Salicylic Acidand Irradiation as Postharvest Treatments for Storage of Persimmon Fruits Cv."Costata"

E. Azza Al-Majed, M. S. El-Shamma, M. Omaima Hafez, A. Malaka Saleh, S. Nagwa Zaied

Asian Journal of Agricultural and Horticultural Research, Page 1-10
DOI: 10.9734/ajahr/2019/v3i329998

Mature Persimmon fruits "Costata cv." were used to study the effect of Acetyl Salicylic Acid (ASA) at rates 0, 2, 3% and/or irradiation (IRD) with 0.0, 1.0, 2.0 KGy doses, using CO60 source at 2g /Sec as a trial for prolonging fruit marketing period and extending its shelf life with good quality, after cold storage treatment. Nine treatments including control were stored for 75 days at 0 ± 1oC with 80 + 2% relative humidity to measure weight loss, fruit firmness and decay percentages. Where, fruit quality parameters during shelf life were evaluated after 7 days of transference to room temperature (23 ± 2°C). Results showed a close relationship between high irradiation dose (2 KGy) and rate of detrimental effects by accelerating ripening process and softening during storage and shelf life to obtain less marketing fruits.  Adding ASA at either 3 or 2% to fruits irradiated with2 KGy,  slightly reduced the decline in fruit quality. Furthermore, non-treated cold stored fruits dominated 2 KGy treatment, in this respect.However, fruit constituent values were gradually progressed and 1 KGy dose recorded the highest storability effect in keeping fruits firm with less deterioration response as combined with 2% ASA, compared with sole ones.Moreover, improving effect in fruit components i.e., acidity, VC, SSC, sugar, T. flavonoids, β-Carotene and reduction in tannin contents were retained with 1 KGy treatment as combined with 2% ASA followed in descending order by 3% ASA. In general, irradiation of persimmon fruits at dose (2 KGy) was not suitablefor preserving stored fruits. Also, sole radiation treatment at 1 KGy was less effective than sole treatment of ASA at  either 2 or 3%  rates, in this respect.  Therefore, irradiation with 1 KGy combined with ASA treatment at 2% can be recommended for improving storability of persimmon"Costata cv." fruits  with the maintenance of good marketable and preferable nutritional parameters up to extended shelf life.

Open Access Original Research Article

Application of Arabic Gum and Essential Oils as the Postharvest Treatments of Le Conte Pear Fruits during Cold Storage

Malaka A. Saleh, Nagwa S. Zaied, M. A. Maksoud, Omaima M. Hafez

Asian Journal of Agricultural and Horticultural Research, Page 1-11
DOI: 10.9734/ajahr/2019/v3i329999

The present study was conducted during 2015 and 2016 seasons on Le Conte pear fruits harvested at mature stage, to investigate the application of (10% w/v) Arabic Gum (AG), Jojoba oil (JO) and Moringa oil (MO) at the rate (100 %) alone on physical and chemical properties. Fruits stored at 0 ± 1°C and 85-90 % relative humidity (RH) for 105 days. A fruit sample of each treatment was taken out at the end of cold storage period and left at room temperature (23 ± 2°C) and 47% (RH) up to 7 days was examined for quality Assessments. Fruit physical properties (weight loss, decay percentages and fruit firmness "Lb/inch2") and fruit chemical properties (total soluble solids percentage and total acidity percentage were evaluated. The results obtained that, all treatments including control succeeded in preventing fruit decay percentage up to 30 days in the two seasons. It is worth mentioning that, Le Conte pear fruits were coated with MO with stands free from deterioration up to 75 days of cold storage period. Beside, fruits coated MO progress in reducing the percentages of weight loss and decay throw cold storage periods for 105 day. The rate of softening increased in fruits with increasing the storage time in both fruits coated and uncoated, but it was significantly declined in uncoated treatments. Moreover, JO coating was more effective in firmness retention compared to the other treatments. Followed by pear fruits was coating with MO and AG in this respect. Furthermore, all coated fruits enhancement fruit quality during storage periods. Finally, it can be concluded that coating Le Conte fruits by Moringa oil recorded successfully reduction in fruit weight loss, decay percentages, improving fruit quality and extended storage fruit life as well as stimulate marketing period (shelf life), also safe on environmental and human health.

Open Access Original Research Article

Possible Planting Areas for Golden Camellia - Camellia impressinervis in Vietnam

Nguyen Van Tuan, Phung Dinh Trung, Tran Duc Manh, Nguyen Toan Thang, Dang Van Thuyet, Dao Trung Duc, Mai Thi Linh, Nguyen Thi Thu Phuong, Ninh Viet Khuong, Vu Tien Lam, Nguyen Huu Thinh, Hoang Thanh Son, Trinh Ngoc Bon, Ho Trung Luong, Vu Van Thuan, Tran Van Do

Asian Journal of Agricultural and Horticultural Research, Page 1-7
DOI: 10.9734/ajahr/2019/v3i330000

Camellia impressinervis is known as a golden camellia, naturally distributing in China and Vietnam. Leaves and flowers of golden camellias contain active ingredients such as polysaccharides, polyphenols, saponins, and flavonoids. It was found to be able to inhibit the transplanted cancer, lower blood lipid, lower cholesterol, and prevent atherosclerosis. Market price of dry flowers of golden camellias in Vietnam is high, up to 700 US$/kg. This work was to identify suitable planting areas for C. impressinervis in Vietnam. Natural conditions, where C. impressinervis naturally distributes, were used for mapping, including elevation above sea level, annual precipitation, and annual air temperature. Each condition was classified to four levels as “very suitable”, “suitable”, “less suitable”, and “not suitable” for planting. Three corresponding digital maps were used for mapping. The results indicated that 72,781 ha accounting for 32.3% total land area of the study site was classified as “very suitable” for planting C. impressinervis. The “suitable” areas accounted for 34.2% and the not suitable areas accounted for 33.5% total land area. There was no area belonging to “less suitable”. It is recommended that C. impressinervis should be planted in “very suitable” areas and may be extended some to “suitable” areas. However, it should be widely planted only after carefully studying on cultivar selection, seedling production, and planting and tending techniques with consultation by local authorities.

Open Access Original Research Article

Evaluation and Comparative Study of the Nutritional Profile and Antioxidant Potential of New Quinoa Varieties

Gabriela Silvina Razzeto, María Angelina Uñates, José Elías Rojas Moreno, Romina Viviana Lucero López, Elba Graciela Aguilar, Héctor Sturniolo, Nora Lilian Escudero

Asian Journal of Agricultural and Horticultural Research, Page 1-11
DOI: 10.9734/ajahr/2019/v3i330002

Aims: Quinoa (Chenopodium quinoa) is an ancient crop known for its high nutritive potential. The goal of the present work is to study the nutritional composition, identify some antinutritional factors and antioxidant compounds, and evaluate their antioxidant activity in four advanced lines of quinoa seeds obtained in experimental plots.

Methodology: For this purpose, proteins, total lipids, fiber, moisture, ash and carbohydrates, as well as fatty acid composition and mineral content, were determined in whole meal flours of these advanced lines. The presence of trypsin inhibitors, saponins, nitrates, oxalates and phytate was also evaluated, as well as total phenols and antioxidant activity.

Results: These new quinoa varieties have good nutritional properties, with high protein content in comparison to cereals. In this work, the analysis of proximate and mineral profile of quinoa showed that this pseudocereal has a similar profile but significantly higher than rice, a traditional cereal. Quinoa is a rich source of magnesium, iron, manganese, copper and molybdenum, which are elements that are deficient in almost all gluten-free cereals. The tests performed on the evaluated antinutrient compounds resulted within the acceptable values for human consumption.

The seed extract showed a total phenol content between 43.42 ± 1.35 and 25.82 ± 1.47 mg of gallic acid equivalent/100 g dry weight (P= .05). The antioxidant activities were estimated by DPPH, β carotene and nitric oxide scavenging activity. The results of the methanolic extract were, in average, 88.95 for %DPPH, 26.56 for %β carotene, and varied between 85.82 ± 8.32 to 22.20 ± 1.80 for %NO (P= .05).

Conclusion: Therefore, it can be concluded that the new quinoa lines obtained in the central-west region of Argentina, which present agronomic advantages, are safe for human consumption and beneficial due to the content of nutrients and bioactive compounds that exert protection against many diseases.

Open Access Short Research Article

Determinants of Profitability and Problems Encountered by Women Palm Oil Processors in Ogbomoso Agricultural Zone of Oyo State, Nigeria

Y. E. Ajibade, J. A. Folayan

Asian Journal of Agricultural and Horticultural Research, Page 1-6
DOI: 10.9734/ajahr/2019/v3i330001

Aims: The study described the socio-economic characteristics, examined the determinants of profitability and identified the problems encountered by respondents during palm oil processing.

Place and Duration of Study: The study was conducted in Ogo- Oluwa, Surulere and Oriire Local Government Areas, Ogbomoso agricultural zone, Oyo State, Nigeria between March 2016 and June, 2016.

Methodology: A multistage sampling technique was used to select one hundred and twenty respondents from Ogo-Oluwa, Surulere and Oriire Local Government Areas in Ogbomoso Agricultural zone. Structured questionnaire coupled with interview schedule were used to elicit data. Analytical tools were descriptive statistics and linear regression.

Results: The findings showed that 69.16% of the respondents fell within 20-50 years, about 87.5% were married and 72.50% had formal education. About 83.00% had their source of capital from personal savings and 96.66% engaged in other occupation. Selected variables determined profitability as shown by regression analysis.

Conclusion: Highest qualification, membership of association, ownership of oil palm plantation and quantity of palm oil produced determined profitability while water scarcity, transportation, finance and market instability were the problems faced by respondents.