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University of Agricultural Sciences, Bengaluru

University of Agricultural Sciences Bangalore, a premier institution of agricultural education and research in the country, began as a small agricultural research farm in 1899 on 30 acres of land donated by Her Excellency Maharani Kempa Nanjammanni Vani Vilasa Sannidhiyavaru, the Regent of Mysore and appointed Dr. Lehmann, German Scientist to initiate research on soil crop response with a Laboratory in the Directorate of Agriculture. Later under the initiative of the Dewan of Mysore Sir M. Vishweshwaraiah, the Mysore Agriculture Residential School was established in 1913 at Hebbal which offered Licentiate in Agriculture and later offered a diploma programme in agriculture during 1920. The School was upgraded to Agriculture Collegein 1946 which offered four year degree programs in Agriculture. The Government of Mysore headed by Sri. S. Nijalingappa, the then Chief Minister, established the University of Agricultural Sciences on the pattern of Land Grant College system of USA and the University of Agricultural Sciences Act No. 22 was passed in Legislative Assembly in 1963. Dr. Zakir Hussain, the Vice President of India inaugurated the University on 21st August 1964.

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Subject: Agricultural Engineering × Author: GEETA, H PUDAKALAKATTI × End date: 2009 × Start date: 2009 ×
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    ThesisItemOpen Access
    STUDIES ON SHELF LIFE EXTENSION OF SWEET CORN (Zea mays var. Rugosa)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2009-07-10) GEETA, H PUDAKALAKATTI; Palanimuthu, V
    Sweet corn (Zea mays var. Rugosa) is a perishable agricultural commodity prone to rapid post harvest deterioration in quality especially the loss of sweetness. An investigation was undertaken to increase the shelf-life of fresh sweet corn cobs to benefit both farmers and consumers. The physical characteristics of fresh sweet corn cobs were measured to be: length - 237.5 ± 17.0 mm, diameter - 55.62 ± 3.42 mm, unit weight - 361.26 ± 34.24 g, bulk density - 1150.55 ± 0.58 kg/m3 and ear-to-kernel ratio - 2.3:1. Biochemical analysis showed that sweet corn kernels had 76.14 ± 0.78% moisture, 14.62 ± 0.4% starch, 1.8 ± 0.1% crude fiber, 37.5 ± 0.5% total sugars, 34.7 ± 0.3% non-reducing sugars and 2.8 ± 0.05% reducing sugars. Respiration characteristics, physiological loss in weight (PLW), sensory quality and microbial quality of sweet corn cobs stored with and without husk were studied at five different temperatures. The initial respiration rate (in ml CO2 / kg-h) of fresh sweet corn cob with husk was 140 and the peak respiration rates at 30, 20, 10, 5 and 0ºC were respectively 416.7, 265.2, 188.4, 170.4 and 162.1. The PLW of cobs with husk during storage was 0.83-3.74%, 0.94-5.26%, 1.07-5.74%, 3.59-8.00% and 4.29-15.35% at 0, 5, 10, 20 and 30ºC, respectively. The optimum storage temperature, selected based on peak respiration rate, PLW and storability without microbial infestation for sweet corn was found to be 0ºC. Further, a storage study of sweet corn cob using six different packaging systems was conducted at 0ºC. Modified Atmosphere Packaging systems with silicone membrane and diffusion channel, LDPE film bags with and without ventilation, vacuum packaging and shrink wrapping were tried. Among different packaging systems tested for sweet corn storage, the least value of PLW (0.533%), better retention of total sugar in corn kernels (without conversion into starch), maximum shelf-life (16 days) and high sensory quality was observed with shrink wrapped cobs.