Comparative study of proteinase inhibitors in tropical root crops and survey of allelochemicals in the edible aroids

Proteinases and Their Inhibitors in Plants: Role in Normal Growth and in Response to Various Stress Conditions

“…Inactivation or proteoly!iis of inhibitors, release of proteinases from conlplexes, or activation of latent enzymes were claimed to contribute to this process (KeJubhavi etal., 1993). The presence of chaotropic ions (Jarvinen, 1978), alkaline pH (Brzin, Mesko and Kregar, 1982) and heating (Turk et al, 1983) as used in the isolation of hunlan cystatinsp roved to be advantageous in isolation ofcystatin fronl chick peas (Brzin t unpublished results) and Kunitz type SPI from giant taro (Bradbury and Hammer, 1990).…”

Acceleration of mass transfer rates in osmotic dehydration of elephant foot yam (Amorphophallus paeoniifolius) applying pulsed-microwave-vacuum

“…Also, elephant foot yam contains vitamins, minerals, and energy and has medicinal and therapeutic value (Nath et al, 2007). But the edible aroids have not been realized for their full potential because of palatability problems associated with anti-nutritional factors like oxalate, trypsin inhibitors, and acridity (Bradbury and Hammer, 1990). The corms are usually eaten as a vegetable after boiling or baking and A C C E P T E D M A N U S C R I P T…”

Quantitative and Qualitative Aspects of Elephant Foot Yam

“…The acridity is believed to be due to a combination of calcium oxalate crystals (Bradbury and Holloway, 1988;Saikia and Borah, 1994) and a chemical irritant, as yet undetermined but believed to be either a diglucoside of 3,4-dihydroxy benzaldehyde (Saha and Hussain, 1983;Suzuki, 1980), an unidentified proteinase (Bradbury and Hammer, 1990;Fochtman et al, 1969), or a hormone or sapotoxin (Walter and Khanna, 1972). Intake of oxalate-containing foods is known to produce chronic effects, including deposition of calcium oxalate crystals in the kidneys (Connor, 1977), occurrence of renal stones (Passmore and Eastwood, 1986), and reduction in bioavailability of calcium (Hodgkinson, 1977;Kelsay, 1985).…”