USDA Nutrient database Wide-ranging claims have been made for the effectiveness of onions against conditions ranging from the common cold to heart disease, diabetesosteoporosisand other diseases. Preliminary studies have shown increased consumption of onions reduces the risk of head and neck cancers.
These idioblasts contain both needle-like calcium oxalate crystals mechanical irritants in a soup of irritant chemicals chemical irritants; Table 6. The crystals are forcibly injected into the skin or mucosa following mechanical stimulation of the idioblasts. Depending on the anatomical location of the crystal deposition, the clinical effects can be minor e.
Treatment is generally supportive and symptomatic in nature. Skin involvement with a mechanical irritant should be treated with demulcent cremes, ice, and analgesics, and perhaps removal of the offending agent if appropriate. Ocular involvement is similarly managed with symptomatic care that may include ocular irrigation and systemic analgesics, and most exposures should prompt consultation with an ophthalmologist.
Oropharyngeal exposures mandate rigorous attention to the airway, and patients may require corticosteroids to limit pharyngeal swelling. Endoscopy is likely indicated in any patient with clinical findings consistent with airway involvement e. Chemical Irritants Chemical irritants differ from the mechanical irritants in that they produce their clinical effects on the basis of a physicochemical quality of the toxin rather than through overt mechanical means Table 7.
Some of these toxins may be introduced along with mechanical irritants, as already noted. Chemical irritants may be directly irritating on the basis of pH or other chemical effects e. These agents may be protoxins that require metabolic transformation to produce the ultimate toxin [e.
Chili peppers Capsicum spp.
Treatment of chemical-induced irritation includes decontamination by thorough washing of the affected area, analgesics, and symptomatic care. Allergens Although any type of allergic response may occur, a type IV, or delayed, hypersensitivity response, also known as allergic contact dermatitis ACDis by far the most common caused by plants Table 8.
Many occupations, such as florists, gardeners, and even outdoor workers uninvolved with plant work, are at risk for the development of ACD.Allium cepa proliferum is the tree onion, it produces bulbils instead of flowers in the inflorescence.
These bulbils have a nice strong onion flavour and can be used raw, cooked or pickled. Onions grow well with most plants, especially roses, carrots, beet and chamomile, but they inhibit the growth of legumes[18, 20, 54, ]. SINGH AND B.
P. SACHAN [Response of different bulb sizes and varieties on onion (Allium cepa L.) seed yield and yield attributing traits]. Crop Res. 15 (1): (). K. Use of digital photography from unmanned aerial vehicles for estimation of leaf area index in onion (Allium cepa L.) Direct induction of protocorm-like bodies from shoot tips, plantlet formation, and clonal fidelity analysis in Anthurium andreanum cv.
CanCan. Plant Growth Regulation ;67(3) (Publisher: Springer Science. Because many Allium species share the common name onion, the “garden onion”—also known as the “bulb onion” and “shallot”—is referred to as Allium cepa.1 The plant’s name comes from the Latin unio, or annianus, and is associated with the Welsh einion.
Allium cepa, the onion (also called bulb onion or common onion) and the shallot (A. cepa var. aggregatum), is a monocot bulbous perennial (often biannual). It is the most widely cultivated species of the genus Allium, which includes other important species such as garlic (A.
sativum) and leeks (A. ampeloprasum).
The present invention provides a plant derived extract comprising inhibitory activity against one or more extracellular proteases which degrade human tissue matrix. Moreover, the amount of inhibitory activity in an extract can be increased by stressing the plant prior to forming an extract. These extracts are each prepared by a standard process and demonstrate the ability to inhibit one or.