Homeostasis ; Taste/physiology* ; Zinc

Biomedical Research ; Dental Research ; Humans ; Taste ; Taste Buds ; cytology

Taste is mediated by multicellular taste buds distributed throughout the oral and pharyngeal cavities. The taste buds can detect five basic tastes: sour, sweet, bitter, salty and umami, allowing mammals to select nutritious foods and avoid the ingestion of toxic and rotten foods. Once developed, the taste buds undergo continuous renewal throughout the adult life. In the past decade, significant progress has been achived in delineating the cellular and molecular mechanisms governing taste buds development and homeostasis. With this knowledges and in-depth investigations in the future, we can achieve the precise management of taste dysfunctions such as dysgeusia and ageusia.
Animals ; Food ; Homeostasis ; Mammals ; Taste ; Taste Buds ; growth & development

The sense of taste is generally regarded as less important compare with vision and hearing. However, gustatory disorder considerably diminish the pleasures of life. The causes of taste disorder are various, and can occur during different pharmacologic treatment. We report a case of reversible ageusia induced by clopidogrel medication.
Ageusia* ; Hearing ; Humans ; Taste Disorders

The ripe dried fruit of citron(Citrus medica) is one of the important sources of Chinese herb Citri Fructus. At the same time, it is also grown for edible and ornamental uses. There are many species and abundant genetic variation. To clarify the intraspecific variation and resource distribution of citron, this study investigated the variation in 11 citron fruits, basically covering the main species in China, including Xiaoguo citron(C. medica var. ethrog), Goucheng(C. medica var. yunnanensis), Muli citron(C.medica var. muliensis), Dehong citron(C.medica×Citrus spp.), Fuzhou citron(C.medica×C.grandis?), Mawu(C.medica×C.grandis?), Cangyuan citron, Binchuan citron, Sweet citron, Big citron, and Small citron. The natural communities of citron were proved to be mainly distributed in the southwestern and western Yunnan and southeastern Tibet of China, with Yunnan, Sichuan, Guangxi, Chongqing, Hubei, and Zhejiang identified as the main production areas. Citron has also been widely grown in India, the Mediterranean region, and the Caribbean coast countries. The field investigation revealed the large-scale intraspecific variation of citron fruits. Most of the fruits are oval-like or sphere-like in shape. The fruits are green when raw and yellow when ripe, with oil cell dots on the skin, stripe-likes running from top to bottom, and bulge at the top. Usually, in the smaller citron fruits, the pulp and juice vesicles are better developed and the central columella is tighter. By contrast, the juice vesicles and central columella in larger fruits became more vacant, with carpels visible, and the apex segregation and development of the carpels is one of the reasons for variation. These variations should be given top priority in the future variety selection and breeding, and the quality differences of different citron species and their mechanisms should be further studied. In particular, variety selection and classification management according to their medicinal or edible purposes will provide scientific and technological supports for the orderly, safe, and effective production of citron products consumed as food and medicine.
China ; Citrus ; Fruit ; Taste ; Tibet

Five flavors are basic nature of Chinese medicine. But the labeling of Chinese medicine flavors was in a chaos. Song Jin and Yuan dynasty is a transconformation stage of labeling Chinese medicine flavors. In this article the author put forward that the determination of Chinese medicine flavor shifted from tasting of early and middle age of Northern Song dynasty to categorical analogizing and functional analogizing in the late age of Northern Song dynasty. The latter method had a flourished development in Southern Song, Jin and Yuan dynasty. This regularity conclusion has provided a reference for the standardizing Chinese medicine flavors.
History, Medieval ; Medicine, Chinese Traditional ; history ; Taste

Humans ; Taste/physiology* ; Dysgeusia ; Nose Diseases ; Nose

Animal medicines have been called "medicine with affinity to flesh and blood" by doctors of all ages, which always act as an important branch of Chinese medicine. They have various types, extensive sources and long application history, with unique cli-nical effects in anti-coagulation, anti-thrombosis, anti-fatigue, immune regulation, anti-tumor, anti-convulsion and so on. Most animal medicines contain proteins, fatty acids, and trimethylamine oxides, which are prone to decomposition and produce substances such as biological amines, aldehydes, ketones, alcohols, trimethylamine and ammonia with unpleasant odors. The stench produced by the combination of various odors can easily cause side effects such as nausea and vomiting, which would probably affect the drug compliance and clinical efficacy in patients, and block the development of high-quality animal medicines. At present, we have insufficient understanding on sources and formation mechanism of the stench of animal medicines, lacking development of taste-masking technology. Therefore, the universality, formation, vomiting mechanism, evaluation methods, and masking technology of stench of animal medicines were summarized in this paper, so as to deepen the recognition of stench, provide references for the development of animal medicines deodorization technology, enhance patients' compliance with animal medicines, and promote animal drugs to better serve public health in the new era.
Animals ; Fatigue ; Humans ; Neoplasms ; Taste ; Technology

Three kinds of excipients were selected to investigate the anti-bitterness effect on the extremely bitter characteristics of Andrographis Herba decoction, and the optimal combined anti-bitterness formula was obtained. The preparation principle of different excipients was clarified by virtual screening and experimental verification to explore the advantages of the three kinds of excipients in the combined anti-bitterness effect. Sensory evaluation showed that mPEG_(2000)-PLLA_(2000), γ-cyclodextrin(γ-CD), and aspartame all had good anti-bitterness effect, which reduced the bitterness intensity of Andrographis Herba decoction by 0.5, 6, and 3 points, respectively. The anti-bitterness effect was superior when 0.15% mPEG_(2000)-PLLA_(2000), 1.60% γ-CD, and 0.04% aspartame were combined, and the taste score of the Andrographis Herba decoction decreased from 8 points(severe bitterness) to 1 point(almost no bitterness). Quantum chemistry calculations showed that mPEG_(2000)-PLLA_(2000) reduced the electrostatic potential of bitter groups, which spontaneously combined with it and formed a physical barrier, hindering the binding of bitter components to receptors. The interaction between γ-CD and bitter components was studied. It was found that the surface area and free energy of γ-CD decreased and the dipole moment increased, indicating that γ-CD included bitter components and self-assembled to form supramolecules. Molecular docking showed that hydroxy at position 14 and carbonyl at position 16 of andrographolide, and hydroxy at position 3 and 4, carbonyl at position 14, and five-membered lactone ring of dehydrated andrographolide were possibly the main bitter groups. The binding free energies of aspartame to bitter receptors TAS2 R10, TAS2 R14, and TAS2 R46 were-3.21,-1.55, and-2.52 kcal·mol~(-1), respectively, indicating that aspartame competed to inhibit the binding of bitter groups to bitter receptors. The results of content determination showed that the free amounts of andrographolide and dehydrated andrographolide in Andrographis Herba decoction were 0.23% and 0.28% respectively, while after adding flavor masking excipients, the dissociation amount of andrographolide and dehydrated andrographolide in the decoction decreased to 0.13% and 0.20%, respectively. The above results show that mPEG_(2000)-PLLA_(2000) involves some bitter components into it through micellar self-assembly to reconcile the entrance bitterness, and γ-CD includes the remaining bitter components in the real solution to control the main bitter taste. Aspartame further competes to inhibit the combination of bitter components and bitter receptors, and improves the taste to be sweet. Multi-excipients combined with anti-bitterness strategy significantly reduces the free concentration of bitter substances in Andrographis Herba decoction, and optimizes the taste of the decoction.
Andrographis ; Taste ; Aspartame ; Excipients ; Molecular Docking Simulation

In an attempt to figure out the relationship between zinc status and taste acuity of old and young women, dietary zinc intake, urinary zinc excretion, and taste acuity were determined for 118 women. Zinc intake was measured by 2-day food records and food frequency method. Urinary zinc excretion was measured from urine samples collected for twenty four hours. Body fat, lean body mass (LBM), and total body water were measured by bio-impedence. Average dietary zinc intake by food record was 4.15+/-1.33mg (=35% if Korean RDA) for the old women and 5.41+/-2.76mg (=25% of RDA) for young women. When zinc intake was measured by a frequency method, the average intakes of the old and young women were 3.5+/-1.7mg 4.5+/-1.9mg, respectively. It appears that dietary zinc intake of young women was significantly higher than that of the old women. Average urinary zinc excretion of the subjects was 0.27+/-0.16mg in the elderly and 0.24+/-0.13mg in young women, which indicated a marginal zinc status. However, zinc status was not significantly different between old and young women. Correlation analysis indicated that zinc intake and urinary zinc excretion were positively related to BMI and LBM in young women. The old women (m=49) showed significantly higher taste detection thresholds than young subjects (n=47) for both sweet and salty tastes. Recognition thresholds for sodium chloride and sucrose were not significantly different between old and young women. The lower the taste thresholds for salty taste, the higher the average dietary zinc intake. However, taste perception concentration was not related to the urinary zinc excretion level.
Adipose Tissue ; Aged ; Body Water ; Female ; Humans ; Sodium Chloride ; Sucrose ; Taste Perception ; Taste Threshold ; Zinc*