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K. Rama Krishna ¹, D. V. Sudhakar Rao ²

Affiliations
1 Department of Horti., Postharvest Technology, UHS, GKVK Campus, Bangalore-560065, Karnataka, IN
2 2Division of Post Harvest Technology, IIHR, Bangalore-500089, Karnataka, IN

Abstract

The effect of chitosan coating on the physico-chemical characteristics of guava cv. Allahabad Safeda fruits stored at room temperature (28-32°C and 32-41% RH) was investigated. The fruits were treated with chitosan (1% and 2%) to study its effect on the postharvest life and quality of guava. Various storage attributes were studied at successive intervals of storage. In general, Physiological Loss in Weight (PLW %), respiration rate and TSS increased while firmness and acidity decreased with storage duration. Among various treatments, 1% chitosan treatment was found effective in extending the shelf life upto7 days, as it delayed ripening and retained greater firmness with reduced PLW%. However, the fruits treated with 2% chitosan showed uneven ripening and didn't turn yellow even at the end of shelf life, attributed to CO2 injury.

Keywords

Chitosan, Guava, Postharvest Quality, Respiration, Storage

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T. M. Gajanana ¹, D. Sreenivasa Murthy ¹, A. K. Saxena ², D. V. Sudhakar Rao ³, M. Sudha ¹, V. Dakshinamoorthy ¹

Affiliations
1 Section of Economics and Statistics, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560 089, IN
2 Division of Plant Pathology, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560 089, Karnataka, IN
3 Division of Post Harvest Technology, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560 089, Karnataka, IN

Abstract

Post-harvest losses (PHL) in guava (cv. Allahabad safeda) were estimated at the field and retail levels in Karnataka, and impact of this loss on marketing efficiency was studied. Results indicated that the total PHL was 13.29% consisting of field-level loss (9.17%) and retail level loss (4.12%). The producer's share was 51.52% and PHL, when included as an item of cost, reduced the share to 45.80%. PHL also reduced marketing efficiency index from 1.06 to 0.88, thereby indicating the importance of PHL and scope for minimizing it to improve the efficiency of the marketing system in guava.

Keywords

Guava, Post-Harvest Losses, Allahabad Safeda, Economic Analysis, Marketing Efficiency.

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B. Varalakshmi ¹, V. Kesava Rao ², D. V. Sudhakar Rao ³, R. B. Tiwari ³, M. Prabhakar ¹

Affiliations
1 Division of Vegetable Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore – 560 089, IN
2 Division of Plant Physiology and Biochemistry, IIHR, Bangalore, IN
3 Division of Post Harvest Technology, IIHR, Bangalore, IN

Abstract

Coriander (Coriandrum sativum L.) is one of the important leafy vegetables having a pleasant aroma. Very little research work has been done on improvement of leafy coriander and only a few local varieties, low-yielding and with low aroma, are available in the market. Research work at Indian Institute of Horticultural Research has resulted in development of a leafy coriander variety, Arka Isha, with a high yield potential and good aroma. It is a multicut variety where the plants are bushy, leaves are broad and leaf lobes are short, and the variety is late flowering. Yield is 3.74t ha^-1 by pulling at 40 days after sowing, and 11.98t ha^-1 by cutting. Leaves have 167.05mg 100g^-1 of Vitamin C, with good aroma and keeping-quality.

Keywords

Leafy Coriander, Variety, Yield.

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Shilpa Pandurangaiah ¹, A. T. Sadashiva ¹, K. S. Shivashankar ¹, D. V. Sudhakar Rao ¹, K. V. Ravishankar ¹

Affiliations
1 ICAR- Indian Institute of Horticultural Research, Bengaluru - 560 089, IN

Abstract

Cherry tomatoes are rich sources of carotenoids. The carotenoids are known to be precursors of vitamin A and also act as an antioxidant. It is important to visually judge the tomato surface color for higher β carotene content since this is the major provitamin A carotenoid. Estimation of carotenoids by HPLC (High Performance Liquid Chromatography) and spectrophotometric methods in tomatoes are very expensive and time consuming. Therefore, colorimeters can be used to describe the color and determine the carotenoid content in a relatively easy and inexpensive manner. The objective of this study was to determine, if the carotenoid content within cherry tomatoes measured by conventional method could correlate with colorimetric CIE (Commission International del’Eclairage) L*, a*, b* color space values. Strong correlations were found between color surface value a* and total carotenoids (0.82) and lycopene content (0.87). We also observed positive correlation for the b* color value with β carotene (0.86). The L* value was negatively correlated (-0.78) with an increase in carotenoids. These close associations between color space values L*, a*, b* and carotenoids will help the breeders to quickly screen large germplasm/ breeding lines in their breeding program for improvement in carotenoid content through this time saving, inexpensive and nondestructive method at fully ripe stage.

Keywords

β Carotene, Carotenoid, Lycopene, Tomato.

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P. D. Kamala Jayanthi ¹, M. R. Dinesh ², M. Sankaran ², P. Saravan Kumar ¹, Vivek Kempraj ¹, M. A. Ravindra ¹, D. V. Sudhakar Rao ³

Affiliations
1 Division of Entomology and Nematology, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake PO, Bengaluru 560 089, IN
2 Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake PO, Bengaluru 560 089, IN
3 Division of Post-Harvest Technology, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake PO, Bengaluru 560 089, IN

Abstract

No Abstract.

Keywords

No Keywords.

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